AndyJay

Sounds like the same as my problem. Take a look at my thread and hopefully that can help you.. http://www.minecraftforge.net/forum/index.php/topic,18783.0.html

Delete your whole .minecraft folder. Obviously copy any mods, texture packs, etc before you do. Then just make sure you have the latest Minecraft launcher. Run the default 1.7.2 first then install the latest 1.7.2 forge (http://adf.ly/673885/http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.7.2-10.12.1.1065/forge-1.7.2-10.12.1.1065-installer.jar). Run the forge profile once and then copy any mods etc back into .minecraft That's what I did and it works. I'm pretty sure the Minecraft launcher updated when I run it so maybe that's messed it up. damn, its just not wanting to work for me for some reason, still getting the "libraries failed to download" Hmm I'm not sure then, you'll be best looking on the internet or making your own thread on here. That worked for me but mine didn't say failed to download etc.

Delete your whole .minecraft folder. Obviously copy any mods, texture packs, etc before you do. Then just make sure you have the latest Minecraft launcher. Run the default 1.7.2 first then install the latest 1.7.2 forge (http://adf.ly/673885/http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.7.2-10.12.1.1065/forge-1.7.2-10.12.1.1065-installer.jar). Run the forge profile once and then copy any mods etc back into .minecraft That's what I did and it works. I'm pretty sure the Minecraft launcher updated when I run it so maybe that's messed it up.

Already done it and it still does the same thing, used the latest version or forge too. Also restarted my pc and nope. Edit: Okay I've just deleted the whole .minecraft folder, installed 1.7.2 & forge and it's working fine now.. Strange, it's the first time it has ever done that.

I doubt there will be one, Minecraft 1.8 is coming soon..

Yeah. It's the first time it's done this. Should I try reinstalling Minecarft completely?

So last night I was playing 1.7.2 forge fine, I go to play this morning and it wont work. Now I've tried deleting the folders inside .minecraft and reinstalling, I've also deleted all my mods and it still wont work. Here's the error: Also all of my non-forge profiles work fine.