Am kind of hoping the outstanding plustek issues are due to a problem in the Sane source :)
The following backend source files have changed since the last release, potentially fixing some of the reported problems:
avision.c
gt68xx.c
gt68xx_devices.c
gt68xx_generic.c
gt68xx_high.c
leo.c
matsushita.c
plustek-usbshading.c
plustek.c
sceptre.c
teco1.c
teco2.c
teco3.c
As always, builds available from http://smedley.info/sane.html
Cheers,
Paul.
Source: Paul Smedley