I really like this plug! The calendar is very dynamic, and the ability to import and export other calendar feeds is a powerful feature.
Unfortunately, I’m having a problem with categories and tags in plugin Version 1.7. When I edit an event, the Add New Category link does not respond, and the Add button for tags does not respond either. I was able to check the box for an existing category, but the category is not listed on the event page after Filed Under.