1.6.1/1.6.2 protocol is not implemented at all. On survival, when you die, then you go veery fast, much more fuster than normally.
Also, I can confirm that Minecraft 1.6 crash with MCServer is caused by a Plugin. I tried only whit Core and ChatLog, and client doesn't crash.
Also, I can confirm that Minecraft 1.6 crash with MCServer is caused by a Plugin. I tried only whit Core and ChatLog, and client doesn't crash.