Hi guys, I have a problem with the RX640 3-in-1 printer/scanner/copier, and maybe someone in here has some pointers. I installed the drivers as instructed under OS X, and the printer works fine. However the scanner only works once, then dies if I switch user accounts. Soon as the other account loads I get a message that the scanner helper ("EPSON SCAN Monitor") cannot find the scanner. If I then switch back to my own account, the scanner no longer works there either. If I totally shut down the machine and restart, it the scanner works again... until I switch users. Doesn't matter which user I start up with, soon as you switch the scanner is buggered. I've tried totally removing the drivers, reinstalling them, downloading latest updates for the driver... and I'm lost for what to try next. Any suggestions?