ReymondO, my issue is specific to QB crashing when setting margins within templates.

Printing works from to this printer from other apps without problems. Printing works from QB to OTHER printers as well, and QB prints to the TSP143III, BUT there's always the margin reminder message, and setting margins in templates crashes QB. I included an attachment of an Event Viewer error in my original post. I would be happy to post the full XML errors, but those attachments are note allowed, evidently.

I've been in IT for over 15 years. I know how to check all of the basics. I've tried all of the suggestions in the linked articles including QBDT tool, have all the latest OS/driver/QB updates etc...