I'm currently having some issues with one of my plugins for R23.
Sadly I can't reproduce the issue, but I have two customers that report the plugin can't be loaded within R23 and they are both on macOS.
I've also provided them with a DEBUG version, but no luck. My guess is the main module will not be loaded at all...
There's nothing useful written to the console at all.
This is the plugin they are trying to load (you can use the TRY button to download):
They also reported that this happens with other plugins as well... I know that @mikeudin Tools4D also has the same problem. @mikeudin if you want to chime in and report your findings... I'm pretty much lost here... haha.