Two fixes from this chain:
1. The error writing files is caused by MacOS Ventura reducing support for using Python. Apple used to define and Objective C object called "objc" and that code was using it. That code was writing text to a file and was done in the Python module using MacOS methods that relied on "objc". I just rewrote to use only Python methods and therefore to not relay on Apple support. I just uploaded a new python module that should fix the book creation script. You can get it here:
Dowload GEDitCOMII.py and replace the older one a ~/Library/Application Support/GEDitCOM II/System/Modules
I did not update the "date" on above link but I am planning to post 3.2 build 4 very soon that will have this updated module (and some other things). I will fix dates then.
2. Second issue with underscores in a name like "Mary _____". I just checked and the scripting checks for that and fixes to work in LaTeX. Here is LaTeX output from such a name when I tried it:
and Lucy \_\_\_\_\_ ({\bf\hyperlink{3}{3}})
If you are not seeing this in your book output, either that name is some other place in the report or those underscores where some other character that looks like an underscore (perhaps some unsupported unicode character). If your underscores not automatically converted as above, send me a short sample ".tex" file output from the CreateBook extension.
John Nairn