This problem is primarily causes by lack of system resources, mainly memory. You should consider increasing physical or vitural memory. Nether the less here is the driver I got with my scanner. Once I solved the memory problem, it worked fine.
The following files are found inside the driver download file.
|12kUBusd.inf||2.1 KB||25 Jan 2000|
|12kUBusd.dll||176.1 KB||31 May 1999|
|USBSCAN.SYS||8.9 KB||20 May 1998|