Hi Cliff,
I have been using the Siemens 6SV and Siadis since 2008 in my Lotus Elise EV and a Vortex kit car.
You won't get it running on anything later than Win98SE. My recommendation is to buy an old laptop from Ebay. It then runs great and you have a hosted serial port as well.
I only know about v2.2.
I do have the inverter manual originally written by Victor of Metric Mind along with the software manual which is quite in depth.
If you are interested I have a reasonable amount of spare parts (PCB's and IGBT's) for both the 400v and 90v inverters as well as complete inverters although not tested.
These were all purchased from Evisol of Holland when they went belly up some years ago.
Russ