GnuCash-docs doesn't work

[Richard Nelson]

I have installed GnuCash 2.0.1 and GnuCash-docs 2.0.0 and all  
dependencies including enable_ofx without significant difficulty.  
GnuCash works well, and I am completing my transition from Quicken.  
My only problem is that I cannot access the GnuCash-docs. They are  
installed and active according to Port Authority, but nothing happens  
when I select either Tutorial and Concepts Guide or Contents under  
the Help menu. I'm sure there is something simple that I have  
overlooked. Any suggestions?

Richard