It appears that when the Power Table Extension Functions encounter an exception, they fail silently. They do log the exception and the stack trace to the console, but unless the user is monitoring the console, they will not know that anything went wrong.
The exception can be caught and handled in the script, so I can write in my own pop up for the user. But I don’t know how to generate an errorBox which includes the “report error” that I usually see when an exception is raised in the Vision projects. Is this something that I can write my own function to do, at least until this problem is resolved?