I just released VueScan 6.6.1 for Windows, Mac OS and Linux.
It can be downloaded from:
http://www.hamrick.com/vsm.html
What's new in version 6.6.1
* Added "Color|Gamma" option to allow changing the
gamma of the image (including gamma 1.0).
* Modified infrared cleaning so setting "Options|Clean"
to "Clean" only changes pixels in the neighborhood of
dust spots. "Scrub" and "Scour" reduce film grain
as well as remove dust spots.
* Modified non-infrared cleaning to remove progressively
larger dust spots and progressively reduce film grain.
* Changed the "Restore colors", "Clean" and "Sharpen"
options to only change the scan, not the preview.
* Reduced the memory utilization of VueScan
* Added support for transparency adapter on Acer 620
* Added separate setting writing 16-bit Infrared
data to TIFF files
Regards,
Ed Hamrick