Hey ThomasN , the exact same thing happend to me yesterday. I would not have believed it if there wasn´t someone watching over Skype Screensharing. I worked on my project, fixed up redirectorys ( cleaning up stuff) and created another project over the launcher. After that my other project is gone. I finally got so far to have a game, very alpha but hey it was the best i could have done so far. All gone. I have no idea what happend. There is even no trace of it at all, i tried to recover it with recuva - there is nothing there. Like it never existed in the first place. How is that even remoteley possible ?
I don´t know if this occurs often - seems so strange. I even believed i got hacked because i shared my IP with others to test my multiplayer game - but then why should someone delete my project and only this ?
Epic Games, i believe it can´t be reproduced. And as i said, i would not have believed it if not someone was looking at my desktop and experienced it with me. It was there - it was gone in the next minute. It wasn´t the most complex game but it could have been my first very clean scripted good one so far. Iam feeling unmotivated to recreate it for now.