Calendar creation won't accept name

Trying to create a scout calendar, when I try to save the new calendar, it says that I have to have a unique name. I have looked and there is no other calendar in the stake with the name I have used.

Are you adding in the complete list of editors when you initially try to create the calendar? In the past when this issue with the calendar name happened the work-around was to create the calendar with only yourself as the editor. Save it, then edit the calendar to add other editors.

You didn't say what your calling is. If you're not a admin, it's possible there's a calendar of the same name that's private or pending approval or deletion.