Would it be possible to add an internal archive for the ''lib'' files so that FML doesn't have to: Downloading http://such-n-such.com. I believe that this is the reason that FML has Fatal Errors when downloading library files, because when I try to go to http://files.minecraftforge.net/fmllibs.scala for example, it isn't an official webpage. Maybe FML has the same issue and that is why it fails. This would also allow people with no internet access to play as well.