I have tried to update Java, LWJGL, and it still is not loading. I will admit that my son plays and I'm not "in the know" as to the details of this issue. All I know is that when he gets to launch Minecraft, it shuts down. I dragged each file, as described in the LWJGL update over the old file. It asks which version I want to keep, and I say the new version. I'm sorry I'm probably not using the proper technical terminology. I have OS X Maverick and Java 7 45.