I upgraded to the latest version yesterday, and now it doesn't work anymore.
My calendar is at http://www.csillamvilag.com/naptar/ and it still loads fine.
But if I click to go to next month, or next year or previous month, or try to change the view from Month view, or try to filter by a category, none of that works.
Clicking on next/previous month/year changes the URL in URL box by adding parameters like ai1ec_month_offset=1 etc, but nothing changes in the display itself.
Hover on the filter lists categories, but nothing happens when I click a category.
Neither hover not click on Month (view) does anything at all.
Clicking on an event, does take to the event page.