Thank you, here are the answers to your questions:

Does logging in as a different user change the behavior? No
Does logging in as Administrator change the behavior? No
Does changing the printer make a difference? No
Does changing the Windows default printer make a difference? No
Can you print from another workstation as the same user? No, different error "print engine not found"
Can you print the report from the Sample data (in \Softrak\OEWin\Samdata) No, same error
Can you print an order confirmation or other form? Yes, orders, confirmations all print fine. Only issue is in reports.
Can you print the File | User Preferences listing? Yes
Have you recently changed workstations? No