Help with Lab X-16 in Stalker: Shadow of Chernobyl! (STALKER: Shadow of Chernobyl)

Hello, tell me, please.
* background *
I decided to play in the Shadow of Chernobyl and installed the mod on the weapon PAK.
When I went to Laboratory X16, Sakharov gave me a helmet and I passed the Laboratory normally.
But then my game broke and had to be reinstalled.

* problem *
I did everything, reinstalled the game and everything was great until the laboratory, Sakharov did not give me a helmet, I thought, well, some kind of bug. I go into it, go through to the moment where the PSI began to operate - Radiation and then began, I go to the levers, and nothing happens to them. (Moreover, they were all lowered, handle down) I went upstairs, there the door is closed. (Where is the Controller) and that's it, I'm stuck at this moment, neither forward nor backward. What to do?

PS I played with the same mod for a weapon pack and everything was fine, before that.
PSS I go up to the control panel, they say to me like "Disable protection" something like that.