Can not scan. keep receiving message "unable to open file".

Check the manual for that on this link http://safemanuals.com/user-guide-instructions-owner-manual/CANON/CANOSCAN%20LIDE%2020-_E
Hope it helps.

You may download from here
http://support-my.canon-asia.com/P/search?category=Scanners&series=CanoScan+LiDE&model=CanoScan+LiDE+20&menu=download&filter=0

"Link Scanned images to..." refers to the programme you want to open the file. Navigate to the .exe of your preferred viewer

Hi toolpusher

Try going to CanoScan Toolbox > Settings and reset the 'defaults' button at bottom... this will restore factory settings and hopefully fix your problem... The other error message you can expect to get is "unable to scan - insufficent memory, check your **** space' (or something similar)... same fix works for both! ...Have had both messages on mine, sounds like a semi-regular conflict on some sort, but seems to be easily fixed. Good luck :-)

tried uninstallin and installin canon scanner drivers..nothing works..still seeing unable to select twian source..

so i tried an alternative..here we go..
on vista 64 os/vista any version..click Start>All programs>Windows fax and scan

next click new scan on top and that got me going.

some say there are issues with the way usb talks to old scanners with new operating systems like mine (vista 64). hope it helps until you find the actual cure.

Head for the Canoscan Toolbox and click on "Settings".
Under "select folder where temporary files are saved", click on "browser".
Choose where you want the scanned item to be sent and then click 'OK".
This works for me.

Hi Peter

Have had the same problem, seems to come and go a bit... Quickest & easiest fix is to go to CanoScan toolboox > Settings then press the 'defauls' button at bottom... this sets everything back to factory settings and should fix your problem. Cheers.

Well I had a code 15 error with mine LIDE 20. Apparently the scanner needs a certain amount of power to run off the USB port. So I changed the USB port and problem fixed

I need Canon CanoScan LiDE20 Scanner Driver for Windows XP

Hello, It may be possible that the error msg that you are receiving may be referring to another error. 1st thing I would try is checking the resolution, in some cases if the resolution is too high it may result with numerous issue's if your random access memory (RAM) is not sufficient enough to accommodate the resolution that you attempting to scan with. Try reducing the resolution, also try a different file type, either jpeg or tiff etc..,if all failes check to see if you have the latest driver(s) update for your scanner.