Creating Event in a different space fails if no page with that name exists in the calendar space

Steps to reproduce: e.g.:

• embed the calendar macro in the Dashbard (or any page in any space but 'MoccaCalendar')
• add a new Event "Test" to the calendar
• add a second Event "Test" to the calendar
  Expected: adds two events
  Observerved: second one creates generic 'error'

The first step creates one event eg. Dashboard.Test, and then tries to create a second event. The second time it checks for an Event "MoccaCalendar.Test" (to avoid name collisions), does not find it, concludes that "test" is free as name, and tries to create " Dashboard.Test" a second time (instead of "Dashboard.Test2").