Dot Matrix printing problem

I want to print from a payroll package which is developed in clipper. It used to print without any problem. Now it print the first page ok from the next page (continueous stationery) onwards it skips some blank lines and on the subsequent pages it skips more lines. The operating system is Windows XP. The only settings from the application are 'set device to print' and checks for the line no. if it exceeds 50 or so lines it 'eject' the page and goes to the next page.it should start printing from the same position instead of skipping lines. Can anybody help me? i am so desperate.Does it have anything to do with XP or windows printter setting. My clients say sometimes it prints properly or it prints some reports properly. I don't understand since we never had a problem like this. My clients have been using this application for a long time since 1999 on different OS like win 98, 2000, NT etc.