Merge pull request PySimpleGUI#392 from MikeTheWatchGuy/Dev-latest

Used PopupError cfor bad element update

Author: MikeTheWatchGuy

PySimpleGUI.py

@@ -2056,7 +2056,11 @@ def __init__(self, key=None):
         return
 
     def Update(self, *args, **kwargs):
-        Popup('Keyword error', self.Key, 'Hey duffus, you gave me a bad key and now you\'re trying to do an update.', 'You need to stop this madness and check your spelling')
+        PopupError('Keyword error',
+            'You need to stop this madness and check your spelling',
+            'Bad key = {}'.format(self.Key),
+            'Your bad line of code may resemble this:',
+              'window.FindElement("{}")'.format(self.Key))
         return