this is a SuperBLT wren tweak applied to deferred_post_processor.post_processor that reverts a change that makes the Ambient Falloff Scale value in game environments reflect the current cubemap used by the environment to instead reflect "skydome_cube_test". probably looks bad on some heists.
If the game launches, and closes immediately without any crashlog, check the BLT logs in PAYDAY 2/mods/logs, you may have another SuperBLT mod trying to modify core/shaders/deferred_post_processor.post_processor, and SuperBLT does not like when there are multiple wren tweaks of the same file and will silently close the game without telling you what's wrong.
