Thanks for the report! I'm not at home right now, but will look at it later today.
@robot256:
Does your code still have the interface functions "get_vehicle_data" and "vehicle_removed"?
It should.
And it doesn't seem to register script_raused_destroy, which will cause a lot of problems with other mods too.
Did you grep for "script_RAUSED_destroy", or was that just a typo in your post? I don't remember removing the handler for script_RAISED_destroy, but of course there is a chance that I did do something wrong.
By the way, I've been resuming work on GCKI and there are two things I'll need for compatibility with Vehicle Wagons. If you don't mind, I'll send you my WIP version of GCKI and perhaps even a patch for Vehicle Wagons in the next few days. :-)