We tested several times and the CTD-Problem seems to be fixed for us. We are running a dedicated server and everything is fine now.
For those who are still experiencing problems, did you compare your new crashfiles to those before the CTD-fix on 6th Sep?
Maybe it is another issue.

We are running also Dev-Build on our Server and are experiencing the same issue. Everytime you try to start a mission e.g. with 5 people at the same time only one makes it into the mission and the rest experiences a crash-to-desktop. This is a serious issue for our community and i hope this get fixed really soon.

Uploaded crashfiles to the issue. We have tested in Vanilla Version as well and got the same issue, it seems that it is not related to the mods we are using.

Same problems here.
I think thomsonb is right, cause when i turn off TrackIR in the "controller" menu i get the same issues when trying to look around in "Free Look".

Seems to be something wrong with the "view".