fix the fix

qtgui/mainwindow.py

@@ -261,10 +261,11 @@ class MainWindow(QtWidgets.QMainWindow):
         for entry in programs:
             exe = entry["argodejoExec"]
 
+            icon = None
             if "argodejoIconPath" in entry and entry["argodejoIconPath"]: #not null
                 icon = QtGui.QIcon(entry["argodejoIconPath"])
 
-            if icon.isNull(): #the DB cache could be wrong. Deinstalled a program and not updated the DB.
+            if not icon or icon.isNull(): #the DB cache could be wrong. Deinstalled a program and not updated the DB.
                 if "icon" in entry:
                     icon = QtGui.QIcon.fromTheme(entry["icon"])
                 else: