Add+Remove programs error

When i use a theme i downloaded for XP home and i go to add and remove programs i get an error trying to open it. The error says something about a parsor message and it could not open some value. I can get the exact error if u need it. WHat can i do to fix it?

 

Hi BumontheRun,
The error message woulkd help.
Does it happen just to the one theme??

 

The error says "value creation failed " at line 472" and i tried it on one other theme and there wasn't a problem.