Thought I'd come in here to share a resolve for a problem.
I'm on Mac and tonight I had a few projects that wouldn't load. Four of them I had been working on today. I google searched and searched in here for a resolution and seems no one had an answer except it happens and use a backup... Wait!! Ureka!!
After calming down I went into the projects folder and saw the iCloud Drive icon next to half my projects and even next to the project folder itself. So if anyone gets that problem, ON MAC, the problem may just be the file has upload to iCloud Drive if you have it turned on.
