I took my old CAD station and put it on the shop floor so I can work on my files while I am directly next to my machines. I have had it happen twice, I was working on a file and went to save it, I got a prompt "Failed to save" then closed solidworks. Went to go open the file again and it was gone. First time it deleted a small sub assembly, today it deleted my massive main assembly with EVERYTHING in it. Thankfully I did a backup on it last Wednesday and I was able to restore it. Any idea why this might be happening? I never had this happen before.