Alright, so i was on my Mac (hear me out), and i go to change my button settings for the F9 control so that the key commands are seperate. Then, the screen shows a weird chart that says something like systemnet whenever i go to the main screen for tekkit and just click anywhere in the window. i have tried deleting it and reinstalling but i think i am missing some files and it just reloads whatever little pieces i deleted. i am stumped. i just need some help please.