I've created a model which uses all the correct arma LODs. I've placed the p3d in my mpmission and spawned using:
createSimpleObject [getMissionPath "mymodel.p3d", AGLtoASL screenToWorld[0.5, 0.5]]
Model spawns in perfectly however after 5-10 minutes of the model being spawned in the mission, random players start being kicked for:
> Wrong signature for file "mpmissions\__cur_mp.altis\mymodel.p3d"
[[ https://i.gyazo.com/8b2aa564837e3dd1749c53e6ec24faf7.png | (screenshot of kick) ]]
I've spoken to Dwarden on discord and he forwarded me onto making a ticket since this could be an Arma issue. It would be awesome if we could get custom models working in mpmissions.