I think you're onto something. I disabled Forms Printer through Customization Status on the ts with the issue, and there was no change. But when I disabled Forms Printer on the working ts, I got the same result I've been getting on the non-working TS. It seems to me now that something isn't quite "enabled" with Forms Printer on that server.
Aside from having to disable/enable Forms Printer on each ts, all settings within Forms Printer seem to apply to the GP Company so I don't see any other settings I can change. I'll have to check if I have support with Accountable.