Well, I've got good news and bad news.
The good news is, I was able to mess around with some files, add a few of my own, and I can play the stage with no freezes. I believe the reason was this. Two files you left blank, they had some transparency normally, but you deleted the whole file. I recreated those files and it works like a charm. Well...mostly.
Which brings me to the bad news. The purple fire and board_3 files didn't seem to edit correctly. Despite being replaced in the .pac file, they show up as the original textures. I snapped a few shots.



I think I'll keep it on my SD card, if you don't mind. It looks badass, even with a little color.
So, do you want me to give you back the .pac file?
This makes me happy.

And yes I would love the Pac file.
Thank you very much for doing this , It is very much appreciated. Ill be sure to credit you and Shadow for both of your assistance.
Though I'm gonna have to change the lighting since its giving the white a purpleish-pink tint to the buildings. As well as change the background to pitchblack for better effect.