Modding Help Need some help breaking the Geneva convention with my biological weapons (mod problems)

Hi, Sorry if I'm doing this wrong it's my first thread on well anything.

So i tried to edit the dragon head gun and the tentacle gun to make them more gruesomely bio mechanical as living weapons are my thing and i wasn't happy with the size or colour of the tentacle gun. I copied and edited/renamed the sprites and codes the best i could (i have very limited experience) but its crashing my game. I'm not sure if metadata and player config are needed (wasn't going to make this public) but included an edited player config anyway. I'm not sure what I'm doing and desperately need some help. I bet its something really stupid.

Thanks for the help in advance!!!