Windows explorer has encountered a problem and needs to close.

[Bikerxxuk]

Windows explorer has encountered a problem and needs to close.

This is happening to me quiet a lot and is very frustrating.
I have done a search on the forum and cannot find any help on this subject.
Maybe I have missed it, if so then I am sorry but I would appreciate any help on this.

My problem started after I had trouble deleting an avi file. I found a 'fix' on this forum and manually deleted the registry key as it said.
avi fix

Ever since then I have been getting 'Windows exporer has encountered a problem and needs to close'

I am a bit of a newbie to the registry, so keep replies simple please.

Any help would be much appreciated as the wife is giving me real grief for messing with it.

Thanks
Steve