Sentries crashing others

Hello everyone,
recently I have often seen players in my game disconnect and I have concluded that it has something to do with the sentries as those disconnects only happen when I bring along my Sentry Build. I was able to recreate the problem and get a crashlog:
Sat Dec 09 16:20:15 2017
Application has crashed: C++ exception
[string "lib/network/base/networkpeer.lua"]:292: attempt to index a nil value
SCRIPT STACK
verify_outfit() lib/network/base/networkpeer.lua:248
set_outfit_string() lib/network/base/networkpeer.lua:1484
lib/network/handlers/unitnetworkhandler.lua:45
-------------------------------
Callstack:
payday2_win32_release (???) ???
payday2_win32_release (???) zip_get_name
payday2_win32_release (???) zip_get_name
payday2_win32_release (???) ???
ntdll (???) NtDeviceIoControlFile
I'm unsure about this, but I suspect the BLT Networking Fix to be responsible since it is the only mod that does anything to the networking. (Is that mod even necessary anymore?)
Replies
It might be that some custom weapon skins are causing the issue. I realized that I always bring a sniper rifle with that build and that weapon has a custom skin on it. So maybe it could be Joker's Usable Workshop or the scripts for that custom skin are faulty.
UPDATE: It seems using any custom skin with Joker's Usable Workshop crashes clients in your game.