Application has crashed: access violation

Callstack:

     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     zip_error_init                                      
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     zip_error_init                                      
     payday2_win32_release  (???)     zip_error_init                                      
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
     payday2_win32_release  (???)     ???                                                 
                  kernel32  (???)     BaseThreadInitThunk                                 
                     ntdll  (???)     RtlInitializeExceptionChain                         
                     ntdll  (???)     RtlInitializeExceptionChain                         

Current thread: Main
Script stack:
_chk_spawn_gear() lib/units/enemies/cop/copbase.lua:97
post_init() lib/units/enemies/cop/copbase.lua:71
lib/units/enemies/cop/copsound.lua:17
safe_spawn_unit()
=[C] produce()
lib/managers/mission/elementspawnenemydummy.lua:72
_try_spawn_unit()
lib/managers/group_ai_states/groupaistatebesiege.lua:1605 _perform_group_spawning()
lib/managers/group_ai_states/groupaistatebesiege.lua:1686
_upd_group_spawning()
lib/managers/group_ai_states/groupaistatebesiege.lua:1571 clbk()
lib/managers/group_ai_states/groupaistatebesiege.lua:229
_execute_queued_task()
lib/managers/enemymanager.lua:600 _update_queued_tasks()
lib/managers/enemymanager.lua:615
update()
lib/managers/enemymanager.lua:52 original()
lib/setups/gamesetup.lua:813
update()
@mods/base/req/core/Hooks.lua:264 update()
lib/setups/networkgamesetup.lua:21
core/lib/setups/coresetup.lua:559

System information:
Application version : 1.143.230
CPU : Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz (2 cores); SSE; SSE2; SSE3; SSSE3; SSE4.1
DirectX : 10.0
GPU : NVIDIA GeForce GT 220 / nvd3dum.dll[21.21.13.4201]
Language : english
Memory : 8190MB 500KB
OS : 6.1.7601 (Service Pack 1) 0x100-0x1 (64 bits)
Physics : threaded
Renderer : DX9 threaded
Sound : Realtek Semiconductor Corp.