Jhalad, could you be more specific about the cantrip error, please? That sounds like one I've been trying to track down, but don't have enough information on.
Check it against these posts in the current bug reports thread, first:
http://forums.wolflair.com/showpost....80&postcount=6
http://forums.wolflair.com/showpost....0&postcount=27
Appended to the name of the Bag of holding should be the number of items in it, and their total weight. Checking that total against a limit is on my to-do list.