Hi,
All you should need to do is install either DIAdem 10 or LabVIEW 8.0 on the machine that has DIAdem 9.1. There is a necessary component that gets installed with either of these pieces of software. DIAdem 9.1 only has USI 1.1 whereas the TDM plugin uses USI 1.3.
Pat P.
Software Engineer
National Instruments