Save button doesn't work

I am using the Modularity 1.4.3 Graph Paper Press theme for my site.
When I try to edit an event and save it the save button does not respond.
The cancel button and delete buttons work fine but I cannot edit any of my events after creating them unless I delete them and start all over again.
Is this a common bug in the calendar application?

Also any editing I do to events just disappears when I next view the calendar.

Checked with Modularity Life - works fine locally.
If issues still occurs - enable debug mode in scheduler settings and send the debug report to us.