You need to update unjam_motio_mark.script by adding conditions to not crash when NPCs spawn with this weapon. I have a big mod pack with this weapon installed and it kept crashing when a bandit with Thompson spawned at Car Park.
Error log:
Expression : <no expression>
Function : CScriptEngine::lua_pcall_failed
File : C:\anomaly_src\xray-monolith\src\xrServerEntities\script_engine.cpp
Line : 206
Description : fatal error
Arguments : LUA error: ...anomaly custom\game data\scripts\unjam_motion_mark.script:4: attempt to index a nil value
stack trace:
Hds46
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Source Games and Mods enjoyer. I made a lot of Garry's Mod addons and The Night Guest custom story for Amnesia The Dark Descent