Hi Terri,
Can you link to your site?
Also, have you tried disabling all other plugins to see if that solve the issue?
Does this happen on the latest version of Twenty Eleven theme?
Are you using the latest versions of our plugin and all our add-ons?
Have you made any customizations to the calendar files, and if so, have you ruled those out as possibly being the cause of this?
I hope to help you get this fixed soon!
(by the way, you posted this in the pre-sales forum, I’m going to move it to the Events Calendar PRO forum)