I am having the same exact problem. Except here's how mine is happening: I am using ForOhFor Error's Steve Minecraft Pack and I decided to edit some of the textures. My first texture was successful and I was able to play as my texture (it was a Link texture, and I edited it, like I said before). However, when I tried to make SkydoesMinecraft's texture on it, and tried it out, right when I picked |BRAWL!|, my game froze, with a loud "BEEEEP" noise. I didn't put any CSP's, all I did was test it out. I even went to BrawlBox and checked to make sure all of the textures were scaled correctly. They were, and I have no idea why it isn't working. The files are FitLink03.pac and FitLink03.pcs, Please tell me how I can fix this as soon as possible, please.