A quick little fix, that hopefully ends all the end-boss problems people have been getting (a.k.a: the missing-switch).
Let me know if you still run into the missing-switch problem in the end boss level. I'm 90% sure this fix does away with it, but I've been sure before ;)
I also added a setting to the options menu to toggle between the old resolution and the new resolution as was introduced in the previous update. I can understand not everybody likes the higher-resolution (and the added view-distance it brings) so this is a way for you to change back to the original one.
So.. go update!