I just released VueScan 7.1.4 for Windows, Mac OS 8/9/X and Linux.
It can be downloaded from:
What's new in version 7.1.4
* Improved color fidelity when scanning film
* Fixed problem with Microtek ScanMaker V
* Fixed problem with using Nikon scanners with
Orange Micro FireWire->SCSI converter on Mac OS 9.1
* Added support for UMAX 600S scanner