Since the upgrade, now none of calendar items I make in composer will save.

When I click publish it just reloads the page, and if I click save it has a page return this error:

{"error":false,"time":"7:02 AM","timestamp":"04\/10\/2013 7:02 am"}

Nothing shows up on the page it is supposed to. For the time being I have a workaround, but it's cumbersome and I'd just like to have this work how it's supposed to. Here's a workaround for anyone else having trouble.

Version 1 ( taking an old event and editing it)
1. Click edit in composer on an old existing item
2. make changes
3. click "save"
4. go to site map
5. click visit
6. In upper right corner is an option to approve edit - this will save it

Version 2 (adding a completely new event)
1. Go to Sitemap
2. click on Calendar
3. select add page
4. Choose calendar template
5. fill in the information on the form there (top has title and the event info is towards the bottom of scrolling page)
6. save it it will show up on the calendar page

Any word from the developers as to when this might be fixed?