I get a similar error when trying to make a portfolio PDF using the Output features in Bridge CS6, Mac.
I'm guessing it may be related to extensions I've disabled; will try that now.
Nix on that. I enabled all previously disabled extensions using Extension Manager CS6 — they were all InCopy-related — and the same error occurs. I should mention the title of the error is 'An error occurred in a Bridge extension.'
Which is why it's particularly annoying that EM doesn't support Bridge anymore — no way to see which extensions Bridge uses, nor manage them.
Ah: problem solved. The default font shown was Hobo Std, of all things, and finally Bridge recognized it's a problem font and disabled it.