Has anyone noticed recently (for those using a Mac and upgraded to High Sierra) that when they open their Unity projects, the assets folders are empty?
I’ve not had the problem as I was already on 2017.2 before upgrading to High Sierra. Sorry if you lost work. If you’re not using git and doing backups, I recommend starting - every game should be in git from the moment you create it.
I was having the same error while opening Unity in the first example. I´m using Mac OS High Sierra and I found in this Unity´s forum thread (https://forum.unity.com/threads/unity-and-macos-10-13-high-sierra.474527/) that is indeed a bug related to the disk format. My personal solution (after 1,000 attemps) was creating a HFS+ partition for the projects.