I'm using blender, if you're not experienced with blender, you probably won't be able to help.
The ME109 that I'm formatting for Absolution is having some issues. I followed the guides on creating a collision mesh as best I could, and I've got this hierarchy:
Shape
|==Detail32
----|==Meshes
----|==Mount0
----|==hub0
----|==hub1
----|==hub2
|==col0
----|==ColMain
Detail32 and col0 are both empties parented to Shape. The collision mesh is parented to col0 and everything else is parented to detail32.
Everything is working fine, until I attempt to spawn the vehicle. At this point I get the "Blockland has encountered a problem and needs to close" dialog.
I've imported it as a static shape and everything is just fine except the collision mesh is visible and the shape has no collision.
Here's the .blend file:
Mediafire