Today i was finishing a 7min HD Video Project for my class, on a mac tower, when i got the I/O error message while exporting it. It got worse from there. Untill today i have had no problem viewing/opening/editing files from my harddrive. Now, i cant even open the FCP project. It says final cut pro quit unexpectedly while using the kgcore plug-in When i try to watch a quicktime file, the movie will play for a few seconds, then freeze and force quit. I try to copy any file to my desktop and it says The Finder cant complete the operation because some data in(filename) cant be read or written. (Error code -36) I ran disk utility to verify the disk, and it says that everything appeared ok. I also ran disk repair, and it also said nothing was wrong with the harddrive. I have tried to do all of these things on 4 different computers today, 3 towers and a Mac Mini. All the same results, down to the exact second and mb of the attempted transfers and watches. Please help me.