Finding open iCal invitations

I'm showing 2 open iCal invitations based on the iCal icon in the dock, yet I cannot find any open invitations that I've not responded to. Is there any way to search for open invitations?

I had the same problem but decided to solve it the old fashion way and explored the program a bit.

Under the "View" menu, select "Show Notifications". The list of all open notifications will appear in the sidebar. Much easier to find than hunting through all the events!

Of course - so easy! Thanks.