iOS version crash when tapping the edit button

[UpAllnite Software]

I have been seeing a very occasional crash when the user taps the edit button in the iOS version. 

I have been unable to duplicate the problem in any of my test devices so I suspect there must be something in the sequence of events before it occurs that I'm not aware of.

If anyone has seen this crash happen on their app, could you please reply on this thread with any context around when it happened to you?