In case anyone else is having this problem--
I moved the Accessories Library folder back to its default location APPLICATIONS/GRAPHISOFT/ARCHICAD 23/
After re-loading from Library manager (which I had done several time previously) it miraculously now works.
Don't ask me why.
Dave Jochum
J o c h u m A R C H I T E C T S http://www.jochumarchitects.comMBP 16" (M1 Max) 64 GB•OS 13.5.2•AC 27 Silicon (latest build)