Game crash!!! (Postal 2)

Please help anyone who can. During the passage of the A week in Paradise mode, my game crashes right when I try to leave the location of the Military Base, where then the Mujahid should agitate something on the building. I just can't get out. Gives an error:

POSTAL 2 Build Jun 29 2015 16:48:19

OS: Windows NT 6.2 (Build: 9200)
CPU: AuthenticAMD Unknown processor @ 2695 MHz with 3293MB RAM
Video: AMD Radeon HD 8350G (1191)
Level: ..Save Save20.usa - Military base part four

Cannot find class for object AWDoorMover3. Probably changed package. Use [PackageRemap] in .ini to fix package changes.

History: (AWDoorMover3 2820426) <- ULinkerLoad::CreateExport <- IndexToObject <- (LinkerLoad Transient.LinkerLoad212 2820426)) <- ULinkerLoad<<UObject <- ULevelBase::Serialize <- ULevel::Serialize <- (Level LowerParadise3.MyLevel 2820426==2820426/7428798 2815914 5154) <- LoadObject <- ULinkerLoad::Preload <- PreLoadObjects <- UObject::EndLoad <- (Engine.Level None.MyLevel LowerParadise3) <- UObject::StaticLoadObject <- LoadLevel <- UGameEngine ::LoadMap <- LocalMapURL <- UGameEngine::Browse <- ClientTravel <- UGameEngine::Tick <- UpdateWorld <- MainLoop