I've found the Events Manager plugin very useful and generally very well thought-out.
It seems to throw up a validation error (although this may be something I'm doing rather than the plugin itself):
Line 83, Column 96: document type does not allow element "div" here …endar-wrapper').first().prepend('<div class="loading" id="em-loading"></div>');
The problem, I'm guessing, is having an apparent div in the head. Is there any way to prevent the validation error from occurring?
There's also a peculiarity, where if I edit a recurring event by clicking on "Reschedule" I end up creating a second event. It seems like that shouldn't happen. Am I editing recurring events in the wrong way, or is this more of a bug?
And finally, I saw there's an "Events Manager Extended" plugin. Are there significant differences between the two plugins?