Have a DOS app that can only print to LPT1 - LPT3. LPT1 is used by QuickBooks PDF Converter, LPT2 is mapped to a receipt printer on another computer, LPT3 was used by Intuit Internal Printer. I changed the internal printer to LPT1 so I could map LPT3 to the local USB printer, i.e. net use LPT3: \\computer\share /PERSISTANT:yes. It appears to work. In a cmd window, if I enter the following: type test.txt > lpt3, I can see it pass throug the correct print queue, but nothing prints. I can print other documents to that printer without any problems. There are no errors in the event logs.
The PC is a Dell Dimension running XP Pro SP3. The printer is a Canon MF4320 printer/copier/scanner/fax.
Anyone have an idea what the problem may be?