Instead of trying to fix the error I went ahead and deleted the entire web & database since it was a test environment. Because of all the modules and such that I had installed / uninstalled , the db had become laced with trash. And with the Enterprise module I had created Event modules that had existed at some point so the original error made sense.
I got the Events working on the fresh portal . However, in calendar view, when I switch between months as clicking the arrow to go from Aug to Sept, the data that populates any given date in the new view disappears. I have to go to another page and then return to the event page. But then I am presented with the current date since the page is reloaded.
As an example I created an event for Sept 7, 05. When I go to the Events page, the August calendar is displayed with all events created for that month. When I click to go to Sept, the events for Sept do not show up. All that's displayed is the empty calendar. When I click to go back to Aug, I then get the empty Aug calendar.
Thanks