Range start must be before range end

[mstyp]

Trying to export the calander I use for time tracking (I use tasker to auto-generate an event detailing what I worked on and when after I complete a task). When I attempt to backup the calander the progress bar goes up about a third of the way then spits out an error:

Range start must be before range end

I assume there is an event that was created with a weird start/end time, but I dont know how I would find it, because I have hundreds of these events.

Any help would be appreciated.