That's almost exactly the same information as the second one you posted here, so it doesn't really tell me much. I guess it's possible that CoFH Core or any of your other mods got corrupted somehow, although without any kind of logfile, I have no way to tell. Do note that the directory in which ForgeModLoader-client-0.log would appear is where the pack itself is installed, not your launcher- if you know how to find your Mods folder, look in that folder's parent folder. If the logfile isn't there, look for a folder called "logs" or "crash-reports".
If you still can't find the log file, try disabling half of the mods and see if the pack loads. If it doesn't, there's a good chance you disabled a dependency of a mod you didn't disable (for example, if you disabled CoFH Core or Thermal Foundation, but not Thermal Expansion), in which case FML will tell you what mods have missing dependencies, so you can disable them, too. If it still doesn't load, keep disabling things until it does. Once it does load, add mods back a few at a time until it breaks again; this way, you'll be able to narrow down which mod or mods are causing the problem.
Also, what pack, exactly, are you trying to play? What mods are in it?
