Problem with night vision and frequent CTD

Hi,new to this but am having the following problems,first i have put night vision on bandit exo/skat 9/skat 10 no problems but when i try to put it on clear sky scientist suit in the swamp camp it either freezes my computer,Ctd to desktop or gives a black screen making me restart my computer,you suggested on GSC forums to Ctrl/alt/delete to bring up task manager but in most cases this puts me back onto the same screen forcing me to restart will you be doing a fix for the night vision? I now find that the further you progress through this excellent game that it CTD on most of the transitions but a restart on the menu of the transition puts this right and the latest thing now is the screen going black with no warning and killing the game and the only way to proceed is to restart my computer,hope you can fix these problems as this is the finest version of this mod i have ever played.

please speak french you are in a french forum