Andrew,
thanks for the ideas.
I tried something new. I installed BAB13 on my Macbook pro - worked like a charm. Then I compared - everything the same, font locations, fonts showing up in Fontbook.
I tested some text programs and found a difference - Word on my Macbook showed all pg fonts, word on my Mac pro only Two.
So, even if Fontbook on both machines showed all the pg fonts, I began to suspect something there.
I googled to look for font problems in Mountain Lion, and I found a solution in the article:
https://discussions.apple.com/thread/4152415?start=15&tstart=0I lost some more hours because my mac pro wouldn't like to start in safe mode, but found out it worked also after a normal boot; opening terminal and entering
sudo atsutil databases -remove
This cleans up the font caches, and after doing this an rebooting, now it works.
Thanks again
Kurt