I am postponing the patch release so that I can properly address a number of issues that have been recently raised. That said, I will be not be as available for questions as I have been recently.
And now for the request: it has become clear that I simply don't have the time to help resolve conflicts with themes. Please before asking for my help, test the calendar with the default WordPress theme and if it works understand that I do not have the capacity to investigate problems with custom themes.
If you experience situations where other plugins don't "play nice" with the calendar, please be sure to test the scenario using the WordPress default theme. And post your findings in the forum.