I took out all of my old mods, downloaded a completely new one for 1.5 and its stick on the mojang screen, I'm really sorry for all of the time that I've wasted. If you have anything to help me, please post it.
I had to delete the minecraft.jar folder so it would update, and after trying to replace the jar, it will not allow me to install forge, it just gets stuck on the updating minecraft screen . If anyone has any idea please reply.