Well, we got it fixed. First we tried leaving and rejoing the project like the archicadwiki article suggests. Then we tested the snow leopard theory on another computer and found that it worked properly which eliminated snow leopard as the culprit. Then we theorized that perhaps when the library was downloading it was writing over it properly causing the library to mis-load.
We tracked the secret location of the Teamwork 2.0 files in the User/Library/Application Support/Graphisoft/TW Data folder. That is where we found the LIBC folder which appears to house the bimserver copy of the library and an xml file called LibraryCacheFolderWrapper. After having 'Left' the project and shutting down AC13 we blitzed the LIBC folder and the xml file. Then we rejoined the project and voila! the library parts reappeared.
I think this is basically a
hard-reload-bimserver-libraries solution.
matt johnson
archicad since 2004
imac 27, 4.2 GHz Intel i7, 16 GB RAM, radeon 575 4 GB, macOS 10.14.6
imac, 4.0ghz i7, 16gb ram, Radeon M9 390 2GB, OS X El Capitan