don't set icon overlay when it would fail anyway. Just in case, fringe corner case

qtgui/quickopensessioncontroller.py

@@ -137,8 +137,8 @@ class StarterClientItem(QtWidgets.QListWidgetItem):
             p.end()
             ico = QtGui.QIcon(pixmap)
         else:            
-            assert self.argodejoExec in self.parentController.mainWindow.programIcons, self.argodejoExec #because we created missing icons ourselves
-            ico = self.parentController.mainWindow.programIcons[self.argodejoExec]            
+            if self.argodejoExec in self.parentController.mainWindow.programIcons: #there was a strange bug once where this happened exactly one, and then everything was fine, including this icon. Some DB backwards compatibility.
+                ico = self.parentController.mainWindow.programIcons[self.argodejoExec]            
 
         self.setIcon(ico)