Enable alerts fails to Load alert lis

I'm setting email Notification for the first time on the system. I have created a new notification group. In the Enable Alerts tab - it freezes Loading the data. I can adjust settings in the Notification Options, save and those changes stick. Its just the Enable Alerts tab does not Load anything. I have waited up to 30 minutes and nothing. Anyone experiencing this or something similar?

Rapid Recovery
Component: Core