That's 3.2.1 stable on Windows 10.
And after restarting it works again... sorry for the fuss, let's hope that was an exception : )
By the way, you don't happen to know how I could paste a folder with a complete project into another project (in Windows) while keeping its inherent dependencies? The FileSystem updates them but they always loose their functionality.
Well, it appears that the issue keeps occurring every now and then, especially when trying to "import" other projects. I'll address this in a separate question.