When I go near the radio in the bunker and get gassed, on my main character, I get a black crash screen when I should get a cinematic

In case you hadn't yet been pointed to the GStaff update, he mentions that one trigger for this issue is having a quest item equipped (the list included Motor Runner's helmet, Boone's beret, the Rebreather, and the Codac Camera if I recall correctly). I assume when they say equipped they MEAN equipped, not just in your inventory (otherwise I have 3 of those items in my inventory and my game got past that part fine).

yep, thats correct your just wrong with the rebreather, its Loyal′s Detonator.