NoelPerry

This checksum error seems to confirm other reports of similar issues. blahblah@blahblah-laptop:~/Downloads$ java -jar minecraftforge-installer-1.6.4-9.11.0.897.jar Checking "/home/blahblah/.minecraft/libraries/org/scala-lang/scala-library/2.10.2/scala-library-2.10.2.jar" internal checksums checksums.sha1 failed validation Checking "/home/blahblah/.minecraft/libraries/org/scala-lang/scala-library/2.10.2/scala-library-2.10.2.jar" internal checksums checksums.sha1 failed validation Checking "/home/blahblah/.minecraft/libraries/org/scala-lang/scala-compiler/2.10.2/scala-compiler-2.10.2.jar" internal checksums checksums.sha1 failed validation Checking "/home/blahblah/.minecraft/libraries/org/scala-lang/scala-compiler/2.10.2/scala-compiler-2.10.2.jar" internal checksums checksums.sha1 failed validation And FWIW, the .883 version ran fine on my other laptop user account upgrade as well

I've been buggering with this all night trying to load the 1.6.4 compatible installer from some internet published versions (minecraftforge-installer-1.6.4-9.11.0.892.jar) I run Ubuntu 12.04 LTS Was finally successful using version minecraftforge-installer-1.6.4-9.11.0.883.jar from this thread: http://www.minecraftforge.net/forum/index.php/topic,12491.0.html Edit: Wrong link....