Cannot modify mkv file / windows explorer crashes

Ok, so I've got a bit of a doozy here.

Like many people out there I'm having problems renaming, deleting, moving, copying, and playing mkv files. If I attempt to do one of the above tasks, windows explorer will crash and I have to restart my computer. I ran a cmd scannow and there indeed was a problem with my cbs log. However, that has since been repaired yet the mkv problem persists. I've also adjusted my viewing options to only show details in the folder, hoping that perhaps it was the thumbnail generator that was to blame. This also did not work.

The mkv file itself doesn't appear to be corrupted. I've been able to successfully transfer some files to an external hard drive. I've been able to play these files no problem on my work computer running windows xp.

I have a feeling it's somehow tied to divX. I've attempted to uninstall the program several times using the normal process from the control panel, once with ccleaner, and currently attempting a forced uninstall with a trial version of revo uninstaller pro. None of these has so far worked.

Anyone have any bright ideas, save for reinstalling my OS? Also, please keep your suggestions in layman's terms. I'm by no stretch well versed in computers.

Thanks.