That initial implode error is now gone with 4.0.5 but I now get that same error as the person above:
You have not defined an end date long enough to create a recurrence.
Something went wrong with the recurrence update…There was a problem saving the recurring events.
That screenshot is identical to what I’m experiencing. Changing the start/end times to 12:00AM doesn’t help, nor does adjusting the length of the recurrence. I continue to get the error every time for recurring events. Thanks for looking into this.