[alexandre-mbm]

alexandre$ grip --gfm
 * Running on http://localhost:5000/
127.0.0.1 - - [02/Apr/2014 22:19:18] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [02/Apr/2014 22:19:19] "GET /screenshot.png?raw=true HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1701, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1689, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1687, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1360, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1358, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1344, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/usr/local/lib/python2.7/dist-packages/grip/server.py", line 59, in render
    return render_page(text, filename, gfm, context, app.config['STYLE_URLS'])
  File "/usr/local/lib/python2.7/dist-packages/grip/renderer.py", line 37, in render_page
    return index_template.render(content=render_content(text, gfm, context), filename=filename, style_urls=style_urls)
  File "/usr/local/lib/python2.7/dist-packages/grip/renderer.py", line 26, in render_content
    data = json.dumps(data)
  File "/usr/share/pyshared/simplejson/__init__.py", line 286, in dumps
    return _default_encoder.encode(obj)
  File "/usr/share/pyshared/simplejson/encoder.py", line 226, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/share/pyshared/simplejson/encoder.py", line 296, in iterencode
    return _iterencode(o, 0)
UnicodeDecodeError: 'utf8' codec can't decode byte 0x89 in position 0: invalid start byte
127.0.0.1 - - [02/Apr/2014 22:19:19] "GET /screenshot.png?raw=true HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1701, in __call__

See /alexandre-mbm/osm/blob/ubuntu+i18n/README.md.

[joeyespo]

Just tested this locally. Seems to be working now.

Try pulling the latest (or upgrading to grip 2.1 once it's released), and let me know if you're still having problems with this.