I'm trying to take the collision mesh from truckarmy01.nif from NV and put it on a repaired truck resource without a collision mesh. I moved the block in nifskope and changed my collision mesh property in my main object node. When it saves I get a message that there's an incorrect path. In game it workks fine, but if the GECK tries to render it the GECK crashes.

Fixed it. I was adding the collision mesh to the root node as a child and as a collision.