I have an other kind of problem, DandelO
I installed the 64 bit v. of Messiah in Windows Home Premium 64 bit with no problem .
Tried to output one generic default scene with the "Heightfield export LWO" node.
It created 1 LWS and 16 LWO files. But as soon as i tried to load the LWS file to Messiah it crashed
I am not sure where the problem is.
Tried some random settings for less LWO file outputs but a LWS file that points to only 1 LWO did crashed Messiah.
Manually editing the LWS file didn't changed this too.
But i could import the above LWO object(s) without error messages to Messiah.
The LWS file was problematic in my test here.
It is my first use of Messiah. So i can not say anything concrete about this behavior or how to resolve unfortunately.
Edit: "Surely, exporting a .lwo from TG into Poseray(free) and out again as .obj should work ok?"