When printing to a locally attached printer, you receive:

   Error writing to LPT1: for <application name>. The requested resource                                 is in use. Do you wish to retry or cancel the job?
When you Retry, the job prints.

To avoid this problem:

1. Start / Settings / Printers / File / Server Properties / Port Tab.

2. Select the printer port (LPTx:).

3. Press Configure Port and set the Transmission Retry to 90 or more.