[Fizzlemizz]

Being a custom panel builder KG won't actually create panels until some deferred time (probably at PLAYER_ENTRING_WOLRD or possibly PLAYER_LOGIN)

ADDON_LOADED will fire for your addon and every addon that loads after that and well before PLAYER_ENTRING_WOLRD so KG is unlikely to have created any panels by then. VARIABLES_LOADED falls into the same early call problem and will add to the error count.

Your KG panels are most likely being skinned because your frame receives its PLAYER_ENTRING_WOLRD event after KG has done initial setup so it actually works that time.