FireShooter10

The command window worked. Thanks for the help Lex. I'll remember this for future problems too.

Recorded a video of exactly what I'm doing, included trying to use Jarfix. http://www.youtube.com/watch?v=nn8MP-8v69A The command prompt window that pops up reads "Error could not find or load main class C:\Users\FireShooter10\Downloads\minecraftforge-installer-1.6.2-9.10.0.804.jar"

Doesn't make a difference, still giving me the same error. I've been looking around for a way to install it manually, but I haven't found anything yet. I just can't get the installer to work right now.

After countless attempts to launch the installer, reinstalling and updating java, using jarfix in admin and non admin mode, the launcher still fails to run. I get a little window that opens up in command prompt that says "Error could not find or load main class C:\Users\FireShooter10\Downloads\minecraftforge-installer-1.6.2-9.10.0.804" Like I said, I've tried everything I can, reinstalling/updating java, using jarfix in admin and non-admin, still the launcher refused to open. I'm on Windows 8 64bit.