This happened a while ago, but I'll say it anyways.
So I dl'ed Bushido'd Flamethrower and I enabled it. After that, I tried to start a game. BL crashed. After some tries, I deleted it, and BL worked again. Something similar happened with the Sixshooter. When I used it, Blockland didn't crash, but ALL gun damage on players was completely turned off, and gun damage was on. Yes, weapon damage was on, and it didn't work. Are there any interfering add-ons? Or do they just not work for Macs?