
Cave Boss 1 (Chieftan Zultrag) does not allow group to attack even though all support groups were cleared

We have group of 3 doing caves and cleared all groups to get to Boss 1 but it is not allowing us to attack him. Error msg pops up indicating we must clear groups but we already have. This is frustrating spending time, pots, and effort for nothing. ">(wtf)
ty for fixing this bug