Today when working on my texture pack, I was testing it out. When I tried signing on to a server, I would get a crash report everytime. Here is the crash report:
Hmm. Whatever it was that you did made Minecraft not like the file. I thought that particles.png supported transparency, so that wouldn't be it. Is there anything else you changed that could have made the game reject the file?
Maybe there's a 1% opacity pixel somewhere on the particles. Can you try to fix that? Just speculating. Try thresholding alpha with a threshhold of 0, temporarily.
Today when working on my texture pack, I was testing it out. When I tried signing on to a server, I would get a crash report everytime. Here is the crash report:
http://pastebin.com/CEXyRpaC
Let me know if you can help!
Hmm. Well.
I've got no idea what caused the crash, then. I'm sorry I couldn't give you an answer, hopefully someone else can come up with something.