http://pastebin.com/XzQNmUCc

particle generator crashes the client when you have opengl and you run away from it unrendering the block.

Disabling opengl in the video settings stops the crash so you can break the block.

Does it work when you remove Optifine?

And just to be clear, you mean the "Advanced OpenGL" option? Minecraft renders everything with OpenGL, you can't just disable it.

Yeah, I see optifine listed at the bottom, this is a bug with optifine unfortunately. Usually the result of a mismatch in forge versions

You crash with or without optifine.

then I need a crash report for this without optifine installed

Looking at the code i dont see any reason for the crash. If it dose crash without optifine please post that crash report and i will investigate further.

Closing until we get a crash report without optifine