** I am able to see a blank calendar. **
Do you mean a calendar without any events on it or a totally blank screen?
The Meta Calendar Plug-in will only display those events which the current user has permissions to view. If they doesn't have permissions to view any events without logging in, then they won't see any events on the Meta Calendar.
If you set any of the other calendars to allow "anonymous" users the ability to view that calendar's events, they will be shown on the Meta Calendar view for "anonymous" users (ones which haven't logged in).
If your calendar is acting other than that, you'll have to post its URL and we'll probably need administration access to see what's going on.
Dan O.
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