I have Scanshell 800n, that is scanning everything in a dark purple. If I take the scanner to another computer, it scans fine. If I take a scanner from another computer, that scanner will scan in dark purple. I have used the driver from the cd and the newest driver from the site. I have changed usb port the scanner is on. I have another scanner on the computer a Canon, that scans fine. The computer sees the scanner, there are no errors in event log or device manager about it. Suggestions?