Scanner XSANE Problem

[Hit]

I have read my Trust Flat Scan USB 19200 works with xsane but it gives this error when i launch program and accepted agreement:
Couldnt vind machine 'gt68xx:libusb:003:005' wrong argument

Maybe not right translated normally its dutch

PLEASE!! help me out i really need my scanner for my homework

IS this because i got 10 usb ports?

Now i plugged in an other port now its says no devices detected
But i readed my scanner was avaible on help it says you need backend or something wats that

FORGET that
Becuase that usb port was broken thats why but if i put in usb port it finds and says: Couldnt vind machine 'gt68xx:libusb:003:005' wrong argument

[Vergil83]

here is a list of Trust brand scanners, do you know which one it is (there are several 19200 series).
http://www.sane-project.org/sane-mfgs.html#Z-TRUST

[Hit]

here is a list of Trust brand scanners, do you know which one it is (there are several 19200 series).
http://www.sane-project.org/sane-mfgs.html#Z-TRUST

Thx
Couldt you explain how to insert the backend btw

But it was:
Flat Scan USB 19200