I have found a copy of the old software... but what I've also found is that the issue is not finding the old software, but finding the right cable. The newest software from Sevcon needs a key and a new version of the cable. The older software does not require a key, but it does require the older IXXAT cable. The older ixxat cables are apparently hard to find.I have need to talk to a Gen4 controller.
Check your PMHi
I would very much appreciate a copy of the older version. I have the ixxat device that should be OK. Apparently the latest version of DVT requires a specific dongle, so is even more restricted. I could PM you with an email address if thats any assistance.