Not "flie integrity violated" then - just something like file integrity violated?
You don't mention what the "something" is you're trying to paste and you don't mention where you're trying to paste it.
The Operating System is unclear and you do not indicate if this happens with all "pastes" or even perhaps those within the same application - cut and paste in a text based document for instance.
I guess that you're trying to paste into a file that does not recognise (or does recognise and refuses to accept) the format of the string being pasted.... But I'm just guessing....
Peccavi
December 2008