i'm having a major problem with this and have tried everything i can to sort it.

when i try and scan something i get the following error "COULD NOT OPEN THE TWAIN SOURCE. MAKE SURE THERE IS A VALID SOURCE FOR YOUR SCANNER IN THE TWAIN DIRECTORY FOUND IN THE WINDOWS DIRECTORY"

this happends even if i try my usb canon scanner or an old parallel port one. the scanner shows as working fine in properties.

i have done all of the following and nothing has sorted it:-

.updated scanner drivers and removed old ones.tried all the updated drivers from canon website.

.installed windows 2000 instead of win xp sp2 i was using

.reset bios to default settings

.tried different usb ports

.tried another usb cable

.tried different scanning software

i can't understand why both scanners will not work on win xp sp2 or win 2000

this is the most annoying pc problem i have EVER had