Alfred- This is a long shot on a problem that is supposedly fixed in Paf 5.2, but go into Windows Display Properties, select 800x600 and small fonts(Win98) or normal fonts (WinXP)[Same thing]... Then select 75% of small/normal fonts and Reboot.
After reboot, go to Display properties and re-select small/normal fonts. See if it "fixed" your problem with the bad file in Paf. If it is fixed, then try going back to your original display settings. Good luck, John