So. I've decided to make my own custom mod pack for me and a friend to play on.
I'll get straight to the point.
It's for 1.4.7. When I start the pack, it loads the Mojang screen, then gives me an error.
Here's the link if anyone would like to have a look at it and see where I messed up: https://dl.dropboxusercontent.com/u/127199657/modpack.zip
If someone could please have a look at it and see what's wrong, that would be greatly appreciated.