Goldenspeedster1

I currently have the exact same problem, running the exact same OS X and Java version. I would recommend downgrading to Java 6 somehow, as i am about to do the same

The error log ends there. I have no clue how to fix, and need help

Title: Cannot launch game Version: 3.1.2 OS: OS X Mountain Lion (10.8.2) Java Version: JDK-7u9-macosx-x64 Description of Problem: It allows me to log in, and closes the login screen. A white window pops up, but immediately closes. Error Messages: Error Log: [08:09:46] [sEVERE] ------------------------------------------ [08:09:46] [sEVERE] Launcher is starting.... [08:09:46] [sEVERE] Launcher Build: '1.0.2.0' [08:09:46] [sEVERE] Allocated 910.25 Mb of RAM [08:09:46] [sEVERE] Java VM: '1.7.0_09-b05' [08:09:46] [sEVERE] OS Version: '10.8.2' [08:09:46] [sEVERE] Is 64-bit: 'true' [08:09:48] [sEVERE] [info] Downloading 'mirrors.yml' from 'http://mirror.technicpack.net/Technic/mirrors.yml'. [08:09:48] [sEVERE] Starting download of 'http://mirror.technicpack.net/Technic/CHECKSUM.md5', with 3 trie(s) remaining [08:09:49] [sEVERE] Copying: /temp/file2974285619489754746.tmp to: /launcher/CHECKSUM.md5 [08:09:49] [sEVERE] File Downloaded: /launcher/CHECKSUM.md5 [08:09:49] [sEVERE] [MD5 Mismatch] File '/launcher/tekkit/modpack.yml' has md5 of '0617096edb6df25e4377a265c12483ba' instead of '032eedc7183acde5b75cd13f9ff2e324' [08:09:49] [sEVERE] [info] Downloading 'modpack.yml' from 'http://mirror.technicpack.net/Technic/tekkit/modpack.yml'. [08:09:50] [sEVERE] [info] Downloading 'minecraft.yml' from 'http://mirror.technicpack.net/Technic/minecraft.yml'. [08:10:42] [sEVERE] Loading Launcher from 'techniclauncher/tekkit'