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.