Under Vista it reboots then completes install, under W7 it reboots then reboots then reboots over and over, will not install.

Alcohol got a bit miffed so I want to make it clear that it's under Windows 7 BETA that the problem is with. Just a snippet of what they said:- Alcohol soft supported Beta versions of Vista but then MS would make a change in their next Beta and this would cause Alcohol not to function, so development would have to waste more time resolving the issue, it was decided that we would not waste time adding support for Windows 7 Beta versions until such a time as MS released their final version prior to public release.

MS them self state that you should not use windows 7 Beta in a working environment as it is a BETA, they also state The features and functionality you find in the Beta product may not appear in the final version of Windows 7

The part of Alcohol that does not presently work within Windows 7 Beta is a third party driver licensed to Alcohol Soft over which we have no control, the driver is not restricted to Alcohol Soft products but is present in many other software's. so in this case it is the SPTD driver developed by Duplexsecure

All sorted....