Thanks, I see.
I have de-installed VA 2.0 beta yesterday, because Rhino crashed after loading a scene with VA 2.0 objects. As much as I would like to use 2.0, I need to work productively.
After downgrading from 2.0 to 1.9.6 and opening the scene, there a few warning dialogs saying "unknown objects" or something like this, but no crash. I deleted the (few) VA objects there were, and rebuilt them.
I still have the crash dump, though. Should I send it to you via mail?
I suppose 1.9.6 and 2.0 cannot co-exist simultaneously, right?