I’m having almost the same problem.
After i got the exchange pluging working I can open the exported comps, BUT while the object buffers came with all the right coordinates, the solids came all in one exact point with one orientation. So you can imagine, that my simple try to export a cube ended with six faces on top of each other.
If anyone has a clue what can I do ‘cuz it’s my 3rd day of surfing the net for solution (or at least a similar problem) and I’m not getting any closer to it.
Thanks and sorry for the long post:)