Well what a nightmare of a night I had with ARMA yesterday. You can read about my tribulations here: https://forums.bistudio.com/topic/186520-suddenly-ctding-when-launching-game-workshoplauncher-issue/?p=2948745
On top of all that, I'm having a very odd issue with a mission I've been editing in the Editor. This may or may not be ALiVE related so I apologize if my guess as ALiVE being the issue is wrong.
So I'm editing and previewing a mission with no issues. Everything is all fine and dandy so I decide to save my editing progress by saving it as a User Mission. So still being in the editor, after saving, I decided to preview the mission again and bang! I immediately CTD after about 30 seconds of the mission loading.
Knowing that the only thing I had done between everything being perfect and everything not working was creating the User Mission, for the heck of it I decided to delete the User Mission file out of My Documents folder. And wouldn't you know it, the mission worked again.
I even PBO'd it and saved it as a MP Mission and everything works wonderfully on my server too. But the second I try to create a User Mission for it in the editor, I immediately CTD after about 30 seconds of the mission loading.
Has anyone seen anything like this before?