Since I am working again on a fantasy level, I also encountered the crash on bond1's fantasy weapons.
I just installed 118 Beta7 and did a test with all I got in a freshly built game:
Crossbow (MP18) - works correctly
Bow (MP18) - works correctly
Oil Bomb (MP18) - doesn't crash, but when thrown it explodes immideately in front of the player (previously it did take 2-3 secs)
Sword (store bought) - crash on equipping (but can be picked up as long another weapon is equipped)
Demon Sceptre(store bought) - crash on equipping, sometimes only on the first shot (but can be picked up as long another weapon is equipped)
Elven Bow(store bought) - works correctly
EDIT: Now its getting weird. The sword crashes every newly built game but I just built an old fantasy map that started the player with the sword allready in possesion and - it doesn't crash this game
PS: I love how bullets make the new water splash on impact, but the accompaning sound is terrible (like some monster is gargling)
In case you find my grammar and spelling weird ---> native German speaker ^^