Can't launch LATEST Forge 1.6.4

[Amooshroom]

(This is the Latest Forge 1.6.4) I tried to install Forge 1.6.4 and it worked. But when i launch the game with forge, it closes the launcher but it does not open the next window(The game). I tried deleting ALL the files from minecraft and install it again but kept crashing. What should i do, should i install another version???

[Amooshroom]

Use 1.7.10 or 1.8, 1.6.4 is outdated and no longer supported.

SOME mods only support 1.6.x

[Amooshroom]

Then don't use THOSE mods. (Why the caps? I am not sure.)

But anyway, Latest Forge 1.6.4 crashes without mods (Why the caps? I am not sure.)