Indeed... Type 1 PostScript : Adobe Type Manager Parse Error, if I'm interpreting correctly. The common approach with font issues is to remove all non-system fonts and, as in your case, to disable or remove third-party font managers, then add everything back on a selective basis. It may also help to completely flush the font manager's backup/ storage folders where it keeps the sorted font groups for instant activation.
Thanks for such a thorough answer. I will try all of those things. And update the boards when I find out.
Thanks for your great website as well!