It was working perfectly for like a week then boom it says
'I wasn't able to locate the file for the eu.heinelt.ifile package.This might mean you need to manually fix this package' It says it for everything!
it usually does this to me when the sources aren't finished updating, try opening cydia and going to the "Changes" tab at the bottom, and press refresh at the top-left of the screen. If that doesnt work then try rebooting after. If that doesnt work either, then just restore and rejailbreak.