Hello everyone, I'm not sure if I should be here or on the driver forum but here goes. I have installed my scanner numerous times b4 but now it refuses to work as it should. Scanner is Canon FB630U , OS is XP pro, 2 user id's, me and wife both as administrators. If I install scanner logged on as me, the TWAIN driver only works for my user and not my wife.This happens vice-versa for my wife. I know it is a twain driver problem because even though the device doesn't work "for the other user" it is recognised by windows and test's OK. Using any application to scan, reveals that no twain compliant device is listed. I can't install the scanner again "for the other user" as windows refuses to do this , I'm guessing because it is already installed correctly. Is their some way to install the twain driver manually . The twain driver is installed in the C:\windows\twain_32 folder as it always was on all other installs. latest canon drivers installed etc. I regularly check for OS updates and install them as needed but havn't installed SP-1, coz I've read to many bad reports at the moment can anyone help?