when i click (or right click) on some .AVI files or Windows Media Classic files, my Windows explorer crashes and says it's an error. The video file itself still plays fine, but any folder i have on my taskbar shutdown and sometimes it doesn't even says that there's an error and the screen just blacks out and Windows explorer closes . I'm currently not on my computer now but when i am i can put up some error logs. But heres the info that i can provide.

I used the CCCP codec pack
Windows XP home ed.
IntelPentium 4
ATi X700 vid card


BTW: I have also checked for spyware and malware and deleted any i could find and yet it still happens.