Ok well ive had garrys mod for about 2 weeks installed on my comp and ive never had this problem befor but now whenever i try and spawn a advance duplication spawn it says Error failed to make thruster
The newest gmod update changed the thrusters, which broke all old advanced dupes. Post-update dupes will work.
The wire lights are having the same issue as well as the thrusters.
Wiremod updates even more often than Gmod does.