Hi, Everyone who uses the mustek_usb backend and has trouble with scanning more than once may want to get the latest code from SANE CVS or the backend homepage: http://www.meier-geinitz.de/sane/mustek_usb-backend/
Affected scanners: Mustek ScanExpress 600 CU Mustek ScanExpress 1200 UB Mustek ScanExpress 1200 CU Mustek ScanExpress 1200 CU Plus Trust Compact Scan USB 19200 The code contains a work-around for that problem. It occurs with libusb, recent Linux and all *BSD kernels. Please tell me if it works for you. Bye, Henning