Hi Everyone I've had a MacBook for nearly 2 years and recently convinced my parents to switch from a PC to an iMac. I've managed to get everything up and running with the exception of our scanner which is an Epson Perfection 1640SU. When I push the scan button on the scanner, the computer recognizes the scanner and comes up with a preview. I can make adjustments with the menus but I can not actually push the "scan" button because it is grayed out. I've attached a screenshot so people get an exact idea of what I'm dealing with. I'd appreciate any help on how to actually scan my images as my parents tend to use the scanner every few weeks.