I ran into something similar, where it says it cannot read package.xml. If you have that error then there is an answer I can give.
Don't see which version of Studio Pro you're on, but if it's 11.6.1-3 or 11.7, this is a problem Mendix knows about. It worked in 11.5, and now it works again in 11.6.4 and 11.8, but not in the in-between versions.
Can't say anything about 10.24.*, but I think it always was, and kept working there.