Constant CTDs, and SCAR Scopes Thread - The Armed Zone mod for S.T.A.L.K.E.R.: Call of Pripyat

Experiencing constant CTDs in the area around Jupiter. Once I move to Jupiter, can play for an hour stable, and then the game will start crashing as soon as I am in an indeterminate proximity of Yanov station. I say indeterminate because first time encountered was about halfway between checkpoint and station. This time halfway between scientist bunker and station. Have A-life distance set to 250. Have applied patch 1.11 and the 1.21.1 old patch linked in the comments section of the relevant post that MP5Ing said to use. Only addon running is Spawndialogue V2.0. Did a full clean install with new character for second test to see if could replicate.

Computer specifications:
-Processor: Intel Core i5-4690k CPU 3.50 GHz
-Installed RAM: 8GB
-OS: Windows 10
-Graphics Card: Nvidia GTX 1060 6GB

Here is log after I replicated crash a few times (Was dumb and didn't make copy of log for previous time):

FATAL ERROR

[error]Expression : error handler is invoked!
[error]Function : handler_base
[error]File : D:\prog_repository\sources\trunk\xrCore\xrDebugNew.cpp
[error]Line : 764
[error]Description : pure virtual function call

Other thing I am reporting right now: On all SCAR assault rifle variants, as well as the FB MSBS-5.56k GROT, the rear sight remains upright when scope is mounted. Don't know if this is bug or intended, as similar thing happened in a different earlier mod and was reported there as bug.

About rear sights this is unfortunately impossible to change, as game doesn't let us change models after scope mounting, so this remains. It's also problem with AR-15s. It is indeed a bug, but it's bug of vanilla game, and not our mod.