fml-client-latest.log
file inside the logs
folder inside your .minecraft
folder to some pastebin site and link to the post here.Install this mod (drop it into your mods folder). Then, whenever you start Minecraft, another small window will open which has a button labled Create Thread Dump
. Start rendering and wait a minute while it's frozen, then press that button. Copy the thread dump from the text area above the button to some pastebin site. Then post the links here.