Assertion 'Irp->IoStatus.Status != STATUS_PENDING' failed using UMAX Austra 2200 SCSI scanner.

Created an attachment (id=7027)
Debug log of scanning with UMAX Austra 2200 SCSI scanner

When scanning an image with my UMAX Austra 2200 SCSI scanner, reactos stops with "Assertion 'Irp->IoStatus.Status != STATUS_PENDING' failed at ntoskrnl/io/iomgr/irp.c line 1217"

If I run in debug mode and type CONT several times, it will continue and successfully scan the image.

The installation of the Adaptec driver is documented here:
http://www.reactos.org/compat/?show=version&id=1124
and the installation of the Vistascan software is documented here: http://www.reactos.org/compat/?show=version&id=1168

Attaching log file.