[Soukup]

2 ideas to help you

First, there are autoback files that are made every 5 minutes or so by your computer. Go find them and see if your file was in there (in your 3ds max directory in autobak folder). Look at the date and time and maybe the thumbnail pic, and then see if your file is there. You may have to change the extension from .bak to .max (can't remember) I personally autobak about eevry 5 minutes, just in case.

If that doesn't work, there's only 1 more thing you can do. Uninstall it, throw up a prayer, and re-install it. If the problem persists, then contact autodesk, cause there's nothing more you can do.