Fixing Add/Remove Programs value creation failed at line 521

Have you ever met with such problem: when you go to Control Panel and want to open Add/Remove Programs there appears parser message “value creation failed at line 521”.Then,how can you fix with this problem?

This problem typically occurs when an unsigned (ie non-Microsoft) Theme is being used. Go to display properties and change the theme back to the default “Windows XP”, then try using Add/Remove Programs again.It should be ok then