So I did google it, and came across this thread:
http://forums.elderscrollsonline.com/discussion/69062/warning-elder-scrolls-deletes-all-programs-bug
Were you uninstalling the game perhaps?
Is everyone overlooking the "small" problem of the game deleting everything in its "folder" when it's being uninstalled? Also why are people trying to put the blame on the user who unknowingly installed the game in the general drive directory instead of the developers who didn't think it wise enough for the game to create its own directory even if the user has failed to specify one? Blizzard are doing this since their Diablo days exactly for those reasons.
And lastly what sort of uninstaller would go ahead and delete everything in the directory indiscriminately? I mean how lazy is this?
If the OP's problem occurred during uninstall (it didn't become clear to me from his post) and he had unwillingly installed the game in the main D folder for instance then it's no surprise all his stuff is gone, but the problem is it never should have been allowed to happen, it's the developers responsibility to safeguard their software against problems like this.