I just released VueScan 6.6.2 for Windows, Mac OS and Linux.
It can be downloaded from:
http://www.hamrick.com/vsm.html
What's new in version 6.6.2
* Significantly improved colors of negative scans and
accuracy of white balance when scanning negatives
* Significantly improved infrared dust removal
* Fixed problem with infrared scanning on ScanWit 2740S
* Fixed problem with Microtek ScanMaker 330
Regards,
Ed Hamrick