noctem9

That did the trick. I should have known. Thank you

Ubuntu 11.10 x64 $ java -version java version "1.7.0_03" Java SE Runtime Environment (build 1.7.0_03-b04) Java HotSpot 64-Bit Server VM (build 22.1-b02, mixed mode) Launcher downloads and sets everything up. When it fires up the Minecraft client I get a white screen where the Mojang splash should be and this error log: Any ideas on how to fix this? Thanks in advance. ------------------------------------------ [02:12:21] [sEVERE] Launcher is starting.... [02:12:21] [sEVERE] Launcher Build: '0.5.4.9' [02:12:21] [sEVERE] Allocated 1820.5 Mb of RAM [02:12:21] [sEVERE] Java VM: '1.7.0_03-b04' [02:12:21] [sEVERE] OS Version: '3.0.0-17-generic' [02:12:21] [sEVERE] Is 64-bit: 'true' [02:12:22] [sEVERE] [info] Downloading 'mirrors.yml' from '[url]http://mirror.technicpack.net/Technic/mirrors.yml'[/url]. [02:12:22] [sEVERE] Starting download of '[url]http://mirror.technicpack.net/Technic/CHECKSUM.md5'[/url], with 3 trie(s) remaining [02:12:22] [sEVERE] Copying: /temp/file5633735347379921244.tmp to: /launcher/CHECKSUM.md5 [02:12:22] [sEVERE] File Downloaded: /launcher/CHECKSUM.md5 [02:12:22] [sEVERE] [MD5 Mismatch] File '/launcher/technicssp/modpack.yml' has md5 of '07119f90218f9ffdb84a45382d5f5455' instead of '8dc7eb4270daaad3a36c60804f9ac4b6' [02:12:22] [sEVERE] [info] Downloading 'modpack.yml' from '[url]http://mirror.technicpack.net/Technic/technicssp/modpack.yml'[/url]. [02:12:23] [sEVERE] [info] Downloading 'minecraft.yml' from '[url]http://mirror.technicpack.net/Technic/minecraft.yml'[/url]. [02:12:36] [sEVERE] Loading Launcher from 'techniclauncher/technicssp' [02:12:42] [sEVERE] Exception in thread "Minecraft main thread" [02:12:42] [sEVERE] java.lang.UnsatisfiedLinkError: /technicssp/bin/natives/liblwjgl.so: /technicssp/bin/natives/liblwjgl.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch) [02:12:42] [sEVERE] at java.lang.ClassLoader$NativeLibrary.load(Native Method) [02:12:42] [sEVERE] at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1928) [02:12:42] [sEVERE] at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1825) [02:12:42] [sEVERE] at java.lang.Runtime.load0(Runtime.java:792) [02:12:42] [sEVERE] at java.lang.System.load(System.java:1059) [02:12:42] [sEVERE] at org.lwjgl.Sys$1.run(Sys.java:69) [02:12:42] [sEVERE] at java.security.AccessController.doPrivileged(Native Method) [02:12:42] [sEVERE] at org.lwjgl.Sys.doLoadLibrary(Sys.java:65) [02:12:42] [sEVERE] at org.lwjgl.Sys.loadLibrary(Sys.java:81) [02:12:42] [sEVERE] at org.lwjgl.Sys.<clinit>(Sys.java:98) [02:12:42] [sEVERE] at org.lwjgl.opengl.Display.<clinit>(Display.java:132) [02:12:42] [sEVERE] at net.minecraft.client.Minecraft.a(Minecraft.java:368) [02:12:42] [sEVERE] at net.minecraft.client.Minecraft.run(Minecraft.java:802) [02:12:42] [sEVERE] at java.lang.Thread.run(Thread.java:722)