Here is the erroring code that breaks the script:
animation = script.Parent.Whack -- Set this to the animation to use.
If I try to fix it then it just moves to the next line that uses script.Parent.something. The error only happens in online mode. The error is:
Whack is not a valid member of tool
I see no other errors unless I fix it. Any ideas on it?

3 comments
If anyone wants to answer now would be great :)
say something please!
Anybody gonna even answer they don't know?