If anyone is trying to use the -d (debug) option in MMA 13.12 ... there's a bug. Sorry. Fix is easy ...
in line 597 of pat.py there is a line "sys.exit()". Delete this line.
I'm going to repost the current package, hopefully tomorrow. It'll be a silent update.
EDIT: The new version is up on the site. Seems like a lot of bits for such a little change