diff --git a/AegeanTools/source_finder.py b/AegeanTools/source_finder.py
index 91b4bf6a..6958d909 100755
--- a/AegeanTools/source_finder.py
+++ b/AegeanTools/source_finder.py
@@ -480,7 +480,9 @@ def fit_islands_parinfo(models, im, rms, wcshelper):
     return islands
 
 
-def priorized_islands_parinfo(sources, im, wcshelper, stage=3):
+def priorized_islands_parinfo(
+    sources, im, wcshelper, stage=3,
+):
     """
     Turn a list of sources into a set of islands and parameter estimates which can then be
     characterised.
@@ -507,6 +509,7 @@ def priorized_islands_parinfo(sources, im, wcshelper, stage=3):
     islands : [:class:`AegeanTools.models.ComponentSource`, ...]
         a list of components
     """
+    return
 
 
 def characterise_islands(
@@ -517,7 +520,8 @@ def characterise_islands(
     wcshelper,
     err_type="best",
     max_summits=None,
-    do_islandfit=False):
+    do_islandfit=False,
+):
     """
     Do the source characterisation based on the initial estimate of the island properties.
 
@@ -2105,16 +2109,21 @@ def _fit_island(self, island_data):
 
         self.log.debug("=====")
         self.log.debug("Island ({0})".format(isle_num))
-        params = self.estimate_lmfit_parinfo(
-            idata,
-            rms,
-            icurve,
-            beam,
-            innerclip,
-            outerclip,
-            offsets=[xmin, ymin],
-            max_summits=max_summits,
-        )
+        try:
+            params = self.estimate_lmfit_parinfo(
+                idata,
+                rms,
+                icurve,
+                beam,
+                innerclip,
+                outerclip,
+                offsets=[xmin, ymin],
+                max_summits=max_summits,
+            )
+        except:
+            self.log.debug("Estimaste lfit params failed, setting to None")
+            params = None
+
         # params = estimate_parinfo_image()
         # islands at the edge of a region of nans
         # result in no components