There is a solution! I thought I would have to trash my LiDE 500f scanner, but I followed the instructions at Canon to a "T" and it worked out. If you already have the latest CanoScan software and drivers, then simply search for the old ScanGear folder and trash it-- this may solve your problem. If not, go to Canon USA's website <http://www.usa.canon.com/consumer/controller?act=DownloadIndexAct> identify your scanner, click on the Download & Drivers tab, select your OS, then download BOTH the latest drivers and the latest CanoScan software (possibly 4.9.3). Download both and install. BE SURE TO TRASH YOUR OLD SCANGEAR FOLDER before you install them. This worked for me without any hitches.