Okay, I got Problem.
I was Play Worms World Party and change the setting.
and i went going to save game (already change [User Defined] name).
but there is a message "ERROR : COULDN'T CREATE SCHEME FILE"
How To Fix This? :(

Make sure you install it in the default location and NOT in Program Files. Alternatively if you really must have it in program files you need to fiddle about with permissions.

does the User\Schemes folder exist?