diff --git a/resources/lib/PlexAPI.py b/resources/lib/PlexAPI.py
index 8267d4bd..2d1623b7 100644
--- a/resources/lib/PlexAPI.py
+++ b/resources/lib/PlexAPI.py
@@ -1535,9 +1535,12 @@ class API():
 
     def getDateCreated(self):
         """
-        Returns the date when this library item was created
+        Returns the date when this library item was created or None
         """
-        return utils.DateToKodi(self.item.attrib.get('addedAt'))
+        res = self.item.attrib.get('addedAt')
+        if res is not None:
+            res = utils.DateToKodi(res)
+        return res
 
     def getUserData(self):
         """
diff --git a/resources/lib/utils.py b/resources/lib/utils.py
index bf1b4a4b..5dfd748f 100644
--- a/resources/lib/utils.py
+++ b/resources/lib/utils.py
@@ -32,9 +32,11 @@ def DateToKodi(stamp):
         propper, human-readable time stamp used by Kodi
 
         Output: Y-m-d h:m:s = 2009-04-05 23:16:04
+
+        None if an error was encountered
         """
-        stamp = float(stamp) + float(window('kodiplextimeoffset'))
         try:
+            stamp = float(stamp) + float(window('kodiplextimeoffset'))
             date_time = time.localtime(stamp)
             localdate = time.strftime('%Y-%m-%d %H:%M:%S', date_time)
         except: