Suddenly and without warning, my .avi file extentions in windows xp have become broken. I think this was related to CCleaner's registry cleaning.
I tried going to Tools->Folder Options->File Types and i found that the .avi file extention doesn't exist. I tried to add it by clicking New... and typing in AVI. it stays on the menu until i close it, and when i reopen the File Types menu, there is no more AVI extention! What is going on here? Is there anyway to make the AVI extention permanent in the File Types menu? I also cannot change the icon which sucks, it defaults to the windows media player icon.
Why is this happening? If it was really just a registry cleaning problem, why can't i recreate the .avi file extention? I can open .avi files on double click only during that session of windows, but i still cant change the icon at all!
Thanks for your help!