diff --git a/gui/fitCommands/calc/fitImportMutatedModule.py b/gui/fitCommands/calc/fitImportMutatedModule.py
index 0ded55105..d3c182d70 100644
--- a/gui/fitCommands/calc/fitImportMutatedModule.py
+++ b/gui/fitCommands/calc/fitImportMutatedModule.py
@@ -30,19 +30,22 @@ class FitImportMutatedCommand(wx.Command):
             pyfalog.warning("Unable to build non-mutated module: no base item to build from")
             return False
 
-        mutaplasmid = getDynamicItem(self.mutaItem.ID)
+
+        mutaplasmid = getDynamicItem(getattr(self.mutaItem, 'ID'))
         # Try to build simple item even though no mutaplasmid found
         if mutaplasmid is None:
             try:
                 module = Module(self.baseItem)
             except ValueError:
-                pyfalog.warning("Unable to build non-mutated module: typeID {}", self.baseItem.id)
+                pyfalog.warning("Unable to build non-mutated module: {}", self.baseItem)
                 return False
+        # Build mutated module otherwise
         else:
             try:
                 module = Module(mutaplasmid.resultingItem, self.baseItem, mutaplasmid)
             except ValueError:
-                pass
+                pyfalog.warning("Unable to build mutated module: {} {}", self.baseItem, self.mutaItem)
+                return False
             else:
                 for attrID, mutator in module.mutators.items():
                     if attrID in self.attrMap:
diff --git a/gui/fitCommands/guiImportMutatedModule.py b/gui/fitCommands/guiImportMutatedModule.py
index ecc84f7ff..9187adf7e 100644
--- a/gui/fitCommands/guiImportMutatedModule.py
+++ b/gui/fitCommands/guiImportMutatedModule.py
@@ -11,7 +11,7 @@ pyfalog = Logger(__name__)
 class GuiImportMutatedModuleCommand(wx.Command):
 
     def __init__(self, fitID, baseItem, mutaItem, attrMap):
-        wx.Command.__init__(self, True, "Mutated Module Import: {} {} {}".format(baseItem.id, mutaItem.id, attrMap))
+        wx.Command.__init__(self, True, "Mutated Module Import: {} {} {}".format(baseItem, mutaItem, attrMap))
         self.mainFrame = gui.mainFrame.MainFrame.getInstance()
         self.sFit = Fit.getInstance()
         self.fitID = fitID