IRRICAD Version 7 or FastQuote Version 3 only:
* Go into Control Panel|System|Device Manager and open Ports (COM & LPT).
* Highlight the Printer Port (LPT1) and right click to select Properties.
* Click on the Port Settings tab and select the option 'Always use an Interrupt Request'.
* As long as an interrupt request has been assigned the the LPT port in the BIOS, the Sentinel can now run.