createdirectoryrecursivefullpath osx

Hi there, everything had been fine and dandy up until today…

Now any project I try to open fails on the fatal error createdirectoryrecursivefullpath

I have seen a number of posts and tried their solutions but to no avail.

Unity version 2017.3.1f1 and osx version 10.13.4

Any ideas or solutions? Im at a loss.

Thanks all.

Ive also removed all of the library/cache/pref folders too so unity forces me to re DL my free license and still I get the error…

help please :(…