The version prior to 3.0 worked pretty well until I updated to 3.0.2 then the in-post element stopped working. I upgraded to the most recent version and all front-end events links lead to a 404.
/category/events goes 404
New posts with events info input will show up in the main blog display as a post (but no maps or events details) and the direct link goes 404.
I had customised the layout of the old plugin and when I tried to copying in those changes to the grid/single etc pages it doesn't improve the situation.
My custom permalinks are /%category%/%postname.html
Prettylinks in the plugin or or off makes no difference.