Go into SYSTEM -> ADD-ONS -> GET ADD-ONS -> Highlight over repository containing broken add-ons
Left Click (If using computer) on repository and select CHECK FOR UPDATES followed by FORCE REFRESH.
Wait 45 seconds, close xbmc and re open it.
This should fix the broken issues. If this doesn't work I would uninstall and re-install the repositories. If both solutions fail I would uninstall XBMC and re-install it.