0ryza

I'm trying to make my own modpack and the first set of instructions in the guide I'm following says to use the extract option to get the universal jar. So the fact that the extract button doesnt seem to work is a bit of an issue - unless I can just use the usual .jar file? But it says that extract should produce something with -universal.jar in the name, which is different. So, how can I get the extract button working?