diff --git a/sc/social/like/browser/socialikes.py b/sc/social/like/browser/socialikes.py
index 4319d577..1cea0023 100644
--- a/sc/social/like/browser/socialikes.py
+++ b/sc/social/like/browser/socialikes.py
@@ -26,7 +26,7 @@ def __init__(self, context, request, *args, **kwargs):
         self.sheet = getattr(pp, 'sc_social_likes_properties', None)
         if self.sheet:
             self.enabled_portal_types = self.sheet.getProperty(
-                "enabled_portal_types"
+                'enabled_portal_types'
             )
 
     @property
diff --git a/sc/social/like/browser/viewlets.py b/sc/social/like/browser/viewlets.py
index 2dfa5b72..2250761b 100644
--- a/sc/social/like/browser/viewlets.py
+++ b/sc/social/like/browser/viewlets.py
@@ -49,7 +49,7 @@ def update(self):
 class SocialMetadataViewlet(BaseLikeViewlet):
     """Viewlet used to insert metadata into page header
     """
-    render = ViewPageTemplateFile("templates/metadata.pt")
+    render = ViewPageTemplateFile('templates/metadata.pt')
     render_method = 'metadata'
 
     def enabled(self):
@@ -67,5 +67,5 @@ def enabled(self):
 class SocialLikesViewlet(BaseLikeViewlet):
     """Viewlet used to display the buttons
     """
-    render = ViewPageTemplateFile("templates/sociallikes.pt")
+    render = ViewPageTemplateFile('templates/sociallikes.pt')
     render_method = 'plugin'
diff --git a/sc/social/like/controlpanel/likes.py b/sc/social/like/controlpanel/likes.py
index 76672d1b..15cc3cb1 100644
--- a/sc/social/like/controlpanel/likes.py
+++ b/sc/social/like/controlpanel/likes.py
@@ -44,8 +44,8 @@ class IProvidersSchema(Interface):
         title=_(u'Content types'),
         description=_(
             u'help_portal_types',
-            default=u"Please select content types in which the "
-                    u"viewlet will be applied.",
+            default=u'Please select content types in which the '
+                    u'viewlet will be applied.',
         ),
         required=True,
         value_type=schema.Choice(vocabulary=CONTENT_TYPES)
@@ -55,7 +55,7 @@ class IProvidersSchema(Interface):
         title=_(u'Plugins'),
         description=_(
             u'help_enabled_plugins',
-            default=u"Please select which plugins will be used",
+            default=u'Please select which plugins will be used',
         ),
         required=False,
         value_type=schema.Choice(vocabulary='sc.social.likes.plugins')
@@ -65,7 +65,7 @@ class IProvidersSchema(Interface):
         title=_(u'Button style'),
         description=_(
             u'help_selected_buttons',
-            default=u"Choose your button style.",
+            default=u'Choose your button style.',
         ),
         required=True,
         default=_(u'horizontal'),
diff --git a/sc/social/like/interfaces/socialikes.py b/sc/social/like/interfaces/socialikes.py
index c1647fed..1c2769f7 100644
--- a/sc/social/like/interfaces/socialikes.py
+++ b/sc/social/like/interfaces/socialikes.py
@@ -1,3 +1,4 @@
+# -*- coding:utf-8 -*-
 from zope.interface import Interface
 from zope.i18nmessageid import MessageFactory
 _ = MessageFactory('sc.social.like')
diff --git a/sc/social/like/locales/es/LC_MESSAGES/sc.social.like.po b/sc/social/like/locales/es/LC_MESSAGES/sc.social.like.po
index 65eb972f..f4fc8a3b 100644
--- a/sc/social/like/locales/es/LC_MESSAGES/sc.social.like.po
+++ b/sc/social/like/locales/es/LC_MESSAGES/sc.social.like.po
@@ -2,7 +2,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: sc.social.like\n"
-"POT-Creation-Date: 2015-04-30 19:51+0000\n"
+"POT-Creation-Date: 2015-05-04 23:38+0000\n"
 "PO-Revision-Date: 2015-03-02 16:03-0300\n"
 "Last-Translator: Héctor Velarde <hector.velarde@gmail.com>\n"
 "Language-Team: Simples Consultoria <products@simplesconsultoria.com.br>\n"
@@ -141,10 +141,10 @@ msgstr "Seleccione en cuáles tipos de contenido se mostrará el viewlet social.
 msgid "help_selected_buttons"
 msgstr "Seleccione de la lista."
 
-#. Default: "The verb to display in the facebook button. Currently only 'like' and 'recommend' are supported."
+#. Default: "The verb to display in the facebook button. Currently only \"like\" and \"recommend\" are supported."
 #: ./sc/social/like/plugins/facebook/controlpanel.py:32
 msgid "help_verb_display"
-msgstr "Texto que se mostrará en el botón de Facebook. De momento sólo 'Me gusta y 'Recomendar' están soportados."
+msgstr "Texto que se mostrará en el botón de Facebook. De momento sólo \"Me gusta\" y \"Recomendar\" están soportados."
 
 #. Default: "Enter your twitter nick. eg. simplesconsultoria"
 #: ./sc/social/like/plugins/twitter/controlpanel.py:20
diff --git a/sc/social/like/locales/eu/LC_MESSAGES/sc.social.like.po b/sc/social/like/locales/eu/LC_MESSAGES/sc.social.like.po
index d388330d..bd848827 100644
--- a/sc/social/like/locales/eu/LC_MESSAGES/sc.social.like.po
+++ b/sc/social/like/locales/eu/LC_MESSAGES/sc.social.like.po
@@ -1,7 +1,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: sc.social.like\n"
-"POT-Creation-Date: 2015-04-30 19:51+0000\n"
+"POT-Creation-Date: 2015-05-04 23:38+0000\n"
 "PO-Revision-Date: 2011-12-12 13:30+0100\n"
 "Last-Translator: Mikel Larreategi <mlarreategi@codesyntax.com>\n"
 "Language-Team: es <es@li.org>\n"
@@ -137,8 +137,9 @@ msgstr "Aukeratu zein elementutan agertuko diren loturak"
 msgid "help_selected_buttons"
 msgstr "Aukeratu botoiaren itxura"
 
-#. Default: "The verb to display in the facebook button. Currently only 'like' and 'recommend' are supported."
+#. Default: "The verb to display in the facebook button. Currently only \"like\" and \"recommend\" are supported."
 #: ./sc/social/like/plugins/facebook/controlpanel.py:32
+#, fuzzy
 msgid "help_verb_display"
 msgstr "Zein hitz agertuko den Facebook botoian. Momentuz 'Atsegin dut' eta 'Gomendatu' bakarrik erabili daitezke."
 
diff --git a/sc/social/like/locales/it/LC_MESSAGES/sc.social.like.po b/sc/social/like/locales/it/LC_MESSAGES/sc.social.like.po
index 63c08203..4929d54d 100644
--- a/sc/social/like/locales/it/LC_MESSAGES/sc.social.like.po
+++ b/sc/social/like/locales/it/LC_MESSAGES/sc.social.like.po
@@ -4,7 +4,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2015-04-30 19:51+0000\n"
+"POT-Creation-Date: 2015-05-04 23:38+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI +ZONE\n"
 "Last-Translator: Luca Fabbri <keul@redturtle.it>\n"
 "Language-Team: RedTurtle Technology <sviluppoplone@redturtle.it>\n"
@@ -139,8 +139,9 @@ msgstr "Prego selezionare su quali tipi di contenuto la viewlet verrà applicata
 msgid "help_selected_buttons"
 msgstr "Seleziona lo stile del bottone"
 
-#. Default: "The verb to display in the facebook button. Currently only 'like' and 'recommend' are supported."
+#. Default: "The verb to display in the facebook button. Currently only \"like\" and \"recommend\" are supported."
 #: ./sc/social/like/plugins/facebook/controlpanel.py:32
+#, fuzzy
 msgid "help_verb_display"
 msgstr "Il verbo da visualizzare nel bottone di Facebook. Al momento solo 'Mi piace' e 'Consigliato' sono supportati."
 
diff --git a/sc/social/like/locales/pt_BR/LC_MESSAGES/sc.social.like.po b/sc/social/like/locales/pt_BR/LC_MESSAGES/sc.social.like.po
index 8ec0d9f8..50a0ad63 100644
--- a/sc/social/like/locales/pt_BR/LC_MESSAGES/sc.social.like.po
+++ b/sc/social/like/locales/pt_BR/LC_MESSAGES/sc.social.like.po
@@ -1,7 +1,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: sc.social.like\n"
-"POT-Creation-Date: 2015-04-30 19:51+0000\n"
+"POT-Creation-Date: 2015-05-04 23:38+0000\n"
 "PO-Revision-Date: 2015-03-02 15:59-0300\n"
 "Last-Translator: Héctor Velarde <hector.velarde@gmail.com>\n"
 "Language-Team: Simples Consultoria <products@simplesconsultoria.com.br>\n"
@@ -139,10 +139,11 @@ msgstr "Indique quais tipos de conteúdo terão o viewlet de ações sociais."
 msgid "help_selected_buttons"
 msgstr "Qual o estilo dos botões."
 
-#. Default: "The verb to display in the facebook button. Currently only 'like' and 'recommend' are supported."
+#. Default: "The verb to display in the facebook button. Currently only \"like\" and \"recommend\" are supported."
 #: ./sc/social/like/plugins/facebook/controlpanel.py:32
+#, fuzzy
 msgid "help_verb_display"
-msgstr "Verbo a ser exibido no botão do Facebook. Atualmente apenas 'curtir' e 'recomendar' estão habilitados"
+msgstr "Verbo a ser exibido no botão do Facebook. Atualmente apenas \"curtir\" e \"recomendar\" estão habilitados"
 
 #. Default: "Enter your twitter nick. eg. simplesconsultoria"
 #: ./sc/social/like/plugins/twitter/controlpanel.py:20
diff --git a/sc/social/like/locales/sc.social.like.pot b/sc/social/like/locales/sc.social.like.pot
index 92d9b85e..1f2240c2 100644
--- a/sc/social/like/locales/sc.social.like.pot
+++ b/sc/social/like/locales/sc.social.like.pot
@@ -1,7 +1,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2015-04-30 19:51+0000\n"
+"POT-Creation-Date: 2015-05-04 23:38+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI +ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -135,7 +135,7 @@ msgstr ""
 msgid "help_selected_buttons"
 msgstr ""
 
-#. Default: "The verb to display in the facebook button. Currently only 'like' and 'recommend' are supported."
+#. Default: "The verb to display in the facebook button. Currently only \"like\" and \"recommend\" are supported."
 #: ./sc/social/like/plugins/facebook/controlpanel.py:32
 msgid "help_verb_display"
 msgstr ""
diff --git a/sc/social/like/plugins/facebook/browser.py b/sc/social/like/plugins/facebook/browser.py
index 4e3e57c3..f77a9761 100644
--- a/sc/social/like/plugins/facebook/browser.py
+++ b/sc/social/like/plugins/facebook/browser.py
@@ -24,8 +24,8 @@ class PluginView(BrowserView):
     fbshow_like = True
     fbshow_share = False
 
-    metadata = ViewPageTemplateFile("templates/metadata.pt")
-    plugin = ViewPageTemplateFile("templates/plugin.pt")
+    metadata = ViewPageTemplateFile('templates/metadata.pt')
+    plugin = ViewPageTemplateFile('templates/plugin.pt')
 
     def __init__(self, context, request):
         super(PluginView, self).__init__(context, request)
@@ -45,11 +45,11 @@ def __init__(self, context, request):
         self.sheet = getattr(pp, 'sc_social_likes_properties', None)
         self.image = get_content_image(context, width=1200, height=630)
         if self.sheet:
-            self.fbaction = self.sheet.getProperty("fbaction", "")
-            self.fbapp_id = self.sheet.getProperty("fbapp_id", "")
-            self.fbadmins = self.sheet.getProperty("fbadmins", "")
-            self.fbshow_like = 'Like' in self.sheet.getProperty("fbbuttons", [])
-            self.fbshow_share = 'Share' in self.sheet.getProperty("fbbuttons", [])
+            self.fbaction = self.sheet.getProperty('fbaction', '')
+            self.fbapp_id = self.sheet.getProperty('fbapp_id', '')
+            self.fbadmins = self.sheet.getProperty('fbadmins', '')
+            self.fbshow_like = 'Like' in self.sheet.getProperty('fbbuttons', [])
+            self.fbshow_share = 'Share' in self.sheet.getProperty('fbbuttons', [])
             self.button = self.typebutton
 
     def fbjs(self):
@@ -97,7 +97,7 @@ def image_url(self):
 
     @property
     def typebutton(self):
-        typebutton = self.sheet.getProperty("typebutton", "")
+        typebutton = self.sheet.getProperty('typebutton', '')
         if typebutton == 'horizontal':
             typebutton = 'button_count'
             self.width = '90px'
@@ -121,5 +121,5 @@ def _isPortal(self):
 
     def type(self):
         if self._isPortal():
-            return "website"
-        return "article"
+            return 'website'
+        return 'article'
diff --git a/sc/social/like/plugins/facebook/controlpanel.py b/sc/social/like/plugins/facebook/controlpanel.py
index 0a98ff5c..ad1ed50f 100644
--- a/sc/social/like/plugins/facebook/controlpanel.py
+++ b/sc/social/like/plugins/facebook/controlpanel.py
@@ -31,9 +31,9 @@ class IFacebookSchema(Interface):
         title=_(u'Verb to display'),
         description=_(
             u'help_verb_display',
-            default=u"The verb to display in the facebook button. "
-                    u"Currently only 'like' and 'recommend' are "
-                    u"supported.",
+            default=u'The verb to display in the facebook button. '
+                    u'Currently only "like" and "recommend" are '
+                    u'supported.',
         ),
         required=True,
         default=u'like',
@@ -44,8 +44,8 @@ class IFacebookSchema(Interface):
         title=_(u'Admins'),
         description=_(
             u'help_admins',
-            default=u"A comma-separated list of either the "
-                    u"Facebook IDs of page administrators.",
+            default=u'A comma-separated list of either the '
+                    u'Facebook IDs of page administrators.',
         ),
         required=False,
     )
@@ -54,7 +54,7 @@ class IFacebookSchema(Interface):
         title=_(u'Application ID'),
         description=_(
             u'help_appid',
-            default=u"A Facebook Platform application ID.",
+            default=u'A Facebook Platform application ID.',
         ),
         required=False,
     )
@@ -66,7 +66,7 @@ class IFacebookSchema(Interface):
             default=u'Select buttons to be shown',
         ),
         value_type=schema.Choice(vocabulary=buttons),
-        default=(u"Like", ),
+        default=(u'Like', ),
         required=True,
     )
 
diff --git a/sc/social/like/plugins/gplus/browser.py b/sc/social/like/plugins/gplus/browser.py
index 3c7ebf49..5d0456e7 100644
--- a/sc/social/like/plugins/gplus/browser.py
+++ b/sc/social/like/plugins/gplus/browser.py
@@ -12,8 +12,8 @@ class PluginView(BrowserView):
     gp_enabled = True
     language = 'en'
 
-    metadata = ViewPageTemplateFile("templates/metadata.pt")
-    plugin = ViewPageTemplateFile("templates/plugin.pt")
+    metadata = ViewPageTemplateFile('templates/metadata.pt')
+    plugin = ViewPageTemplateFile('templates/plugin.pt')
 
     def __init__(self, context, request):
         super(PluginView, self).__init__(context, request)
@@ -32,7 +32,7 @@ def __init__(self, context, request):
 
     @property
     def typebutton(self):
-        typebutton = self.sheet.getProperty("typebutton", "")
+        typebutton = self.sheet.getProperty('typebutton', '')
         if typebutton == 'horizontal':
             typebutton = 'medium'
         else:
diff --git a/sc/social/like/plugins/linkedin/browser.py b/sc/social/like/plugins/linkedin/browser.py
index bc843abe..074ed245 100644
--- a/sc/social/like/plugins/linkedin/browser.py
+++ b/sc/social/like/plugins/linkedin/browser.py
@@ -12,8 +12,8 @@ class PluginView(BrowserView):
     linkedin_enabled = True
     language = 'en'
 
-    metadata = ViewPageTemplateFile("templates/metadata.pt")
-    plugin = ViewPageTemplateFile("templates/plugin.pt")
+    metadata = ViewPageTemplateFile('templates/metadata.pt')
+    plugin = ViewPageTemplateFile('templates/plugin.pt')
 
     def __init__(self, context, request):
         super(PluginView, self).__init__(context, request)
@@ -32,7 +32,7 @@ def __init__(self, context, request):
 
     @property
     def typebutton(self):
-        typebutton = self.sheet.getProperty("typebutton", "")
+        typebutton = self.sheet.getProperty('typebutton', '')
         if typebutton == 'horizontal':
             typebutton = 'right'
         else:
diff --git a/sc/social/like/plugins/pinterest/browser.py b/sc/social/like/plugins/pinterest/browser.py
index 397e5df7..564e29fc 100644
--- a/sc/social/like/plugins/pinterest/browser.py
+++ b/sc/social/like/plugins/pinterest/browser.py
@@ -16,8 +16,8 @@ class PluginView(BrowserView):
     pinterest_enabled = False
     language = 'en'
 
-    metadata = ViewPageTemplateFile("templates/metadata.pt")
-    plugin = ViewPageTemplateFile("templates/plugin.pt")
+    metadata = ViewPageTemplateFile('templates/metadata.pt')
+    plugin = ViewPageTemplateFile('templates/plugin.pt')
 
     def __init__(self, context, request):
         super(PluginView, self).__init__(context, request)
@@ -44,8 +44,8 @@ def share_url(self):
         )
 
     def image_url(self):
-        """ Return url to image
-        """
+        ''' Return url to image
+        '''
         img = self.image
         if img:
             return img.url
@@ -54,7 +54,7 @@ def image_url(self):
 
     @property
     def typebutton(self):
-        typebutton = self.sheet.getProperty("typebutton", "")
+        typebutton = self.sheet.getProperty('typebutton', '')
         if typebutton == 'horizontal':
             typebutton = 'beside'
         else:
diff --git a/sc/social/like/plugins/twitter/browser.py b/sc/social/like/plugins/twitter/browser.py
index 6bcc4017..c1e4eea4 100644
--- a/sc/social/like/plugins/twitter/browser.py
+++ b/sc/social/like/plugins/twitter/browser.py
@@ -16,8 +16,8 @@ class PluginView(BrowserView):
     twittvia = ''
     language = 'en'
 
-    metadata = ViewPageTemplateFile("templates/metadata.pt")
-    plugin = ViewPageTemplateFile("templates/plugin.pt")
+    metadata = ViewPageTemplateFile('templates/metadata.pt')
+    plugin = ViewPageTemplateFile('templates/plugin.pt')
 
     def __init__(self, context, request):
         super(PluginView, self).__init__(context, request)
@@ -34,8 +34,8 @@ def __init__(self, context, request):
         self.language = get_language(context)
         self.sheet = getattr(pp, 'sc_social_likes_properties', None)
         if self.sheet:
-            self.typebutton = self.sheet.getProperty("typebutton", "")
-            self.twittvia = self.sheet.getProperty("twittvia", "")
+            self.typebutton = self.sheet.getProperty('typebutton', '')
+            self.twittvia = self.sheet.getProperty('twittvia', '')
         self.urlnoscript = (
             u'http://twitter.com/home?status=' +
             url_quote(u'{0} - {1} via {2}'.format(
diff --git a/sc/social/like/plugins/twitter/controlpanel.py b/sc/social/like/plugins/twitter/controlpanel.py
index 79b09e82..41f8ad63 100644
--- a/sc/social/like/plugins/twitter/controlpanel.py
+++ b/sc/social/like/plugins/twitter/controlpanel.py
@@ -19,7 +19,7 @@ class ITwitterSchema(Interface):
         title=_(u'Twitter nick'),
         description=_(
             u'help_your_twitter_nick',
-            default=u"Enter your twitter nick. eg. simplesconsultoria",
+            default=u'Enter your twitter nick. eg. simplesconsultoria',
         ),
         required=False,
     )
diff --git a/sc/social/like/plugins/whatsapp/browser.py b/sc/social/like/plugins/whatsapp/browser.py
index b1a9236d..93b5495a 100644
--- a/sc/social/like/plugins/whatsapp/browser.py
+++ b/sc/social/like/plugins/whatsapp/browser.py
@@ -51,8 +51,8 @@ class PluginView(BrowserView):
     gp_enabled = True
     language = 'en'
 
-    metadata = ViewPageTemplateFile("templates/metadata.pt")
-    plugin = ViewPageTemplateFile("templates/plugin.pt")
+    metadata = ViewPageTemplateFile('templates/metadata.pt')
+    plugin = ViewPageTemplateFile('templates/plugin.pt')
 
     def __init__(self, context, request):
         super(PluginView, self).__init__(context, request)
diff --git a/sc/social/like/tests/__init__.py b/sc/social/like/tests/__init__.py
index e69de29b..380474e0 100644
--- a/sc/social/like/tests/__init__.py
+++ b/sc/social/like/tests/__init__.py
@@ -0,0 +1 @@
+# -*- coding:utf-8 -*-
diff --git a/sc/social/like/tests/test_plugin_facebook.py b/sc/social/like/tests/test_plugin_facebook.py
index cdd517c1..85258782 100644
--- a/sc/social/like/tests/test_plugin_facebook.py
+++ b/sc/social/like/tests/test_plugin_facebook.py
@@ -76,11 +76,11 @@ def setup_content(self, portal):
         self.newsitem = portal['my-newsitem']
         self.newsitem.setImage(load_image(1024, 768))
         self.newsitem_bmp = portal['my-newsitem-bmp']
-        self.newsitem_bmp.setImage(load_image(640, 480, format="BMP"))
+        self.newsitem_bmp.setImage(load_image(640, 480, format='BMP'))
         self.image = portal['my-image']
         self.image.setImage(load_image(1024, 768))
         self.image_bmp = portal['my-image-bmp']
-        self.image_bmp.setImage(load_image(640, 480, format="BMP"))
+        self.image_bmp.setImage(load_image(640, 480, format='BMP'))
 
     def test_config_view(self):
         plugin = self.plugin
diff --git a/sc/social/like/upgrades/v3000/__init__.py b/sc/social/like/upgrades/v3000/__init__.py
index e69de29b..380474e0 100644
--- a/sc/social/like/upgrades/v3000/__init__.py
+++ b/sc/social/like/upgrades/v3000/__init__.py
@@ -0,0 +1 @@
+# -*- coding:utf-8 -*-
diff --git a/sc/social/like/upgrades/v3010/__init__.py b/sc/social/like/upgrades/v3010/__init__.py
index e69de29b..380474e0 100644
--- a/sc/social/like/upgrades/v3010/__init__.py
+++ b/sc/social/like/upgrades/v3010/__init__.py
@@ -0,0 +1 @@
+# -*- coding:utf-8 -*-
diff --git a/sc/social/like/utils.py b/sc/social/like/utils.py
index 3e2e48a8..5a8cec22 100644
--- a/sc/social/like/utils.py
+++ b/sc/social/like/utils.py
@@ -7,7 +7,7 @@
 
 def get_images_view(context):
     request = getRequest()
-    key = "cache-view-%s" % (context)
+    key = 'cache-view-%s' % (context)
     cache = IAnnotations(request)
     value = cache.get(key, None)
     if not value:
@@ -21,9 +21,9 @@ def get_images_view(context):
                 if field:
                     field = field[0]
                     # if a content has an image field that isn't an ImageField
-                    # (for example a relation field), set field="" to avoid errors
-                    if schema[field].type not in ["image", "blob"]:
-                        field = ""
+                    # (for example a relation field), set field='' to avoid errors
+                    if schema[field].type not in ['image', 'blob']:
+                        field = ''
         value = (view, field) if (view and field) else (None, None)
         cache[key] = value
     return value
@@ -35,7 +35,7 @@ def get_content_image(context,
                       height=None):
     request = getRequest()
     modification = context.ModificationDate()
-    key = "cache-%s-%s-%s-%s-%s" % (context, modification, scale, width, height)
+    key = 'cache-%s-%s-%s-%s-%s' % (context, modification, scale, width, height)
     cache = IAnnotations(request)
     img = cache.get(key, None)
     if not img: