Now that I'm only trying one mod at a time it doesn't crash for me. It just doesn't pull the mod when I have it placed in the mod folder. I can only see the forge mods. If there's a way to pull up a crash log from the game screen that comes up after forge loads in I don't know how to find it.
I think that the file fml-client-latest.log in your Minecraft folder includes a full description of the error that happened. Open it in Notepad.