I found this thread, and I'm pretty sure it was the error I got, certainly on FEM_BODY.
http://www.2addicts.com/forums/showthread.php?t=1159095
I have seen mention of ESys 3.27.1, which is newer than what I have (which I got from the links provided with the cable I bought on Ebay)
What is the latest PSDZ? Do I need something newer than the 57.1 I have?
With regards to moving to a later version, do I have to uninstalled ESys 3.26 first, or do I just install 3.27 and it will upgrade?
Same question about the PSDZ data? Do I delete everyting in C:/Data/psdzdata and replace it with the new one, or do I have to overlay the new one?