I was in the replay viewer looking at an hour+ long replay, and when loading a new part of the replay, I just froze on the dirt screen, and made a clicking noise every time an error was logged in the Minecraft Lanucher.
Here is the Java error: http://pastebin.com/xD9p7sUh
If you need the full log, I have it available and will upload it ;) Pastebin tab just crashed while trying to paste it in :P
I'm running Minecraft 1.8 with Optifine, on Windows 8.1 Pro x64
