Until: [blank] error

Awesome module, definitely a much needed feature but i was unable to integrate node repeat with the events module and ill save that for a different issue if i cant figure it out, but one things for sure is that if the Until field is left blank while doing a repeat of a node, it errors saying:

* warning: date_format() expects parameter 1 to be DateTime, null given in /home/site/public_html/sites/all/modules/date/date_repeat/date_repeat_calc.inc on line 397.
* warning: date_format() expects parameter 1 to be DateTime, null given in /home/site/public_html/sites/all/modules/date/date_repeat/date_repeat_calc.inc on line 449.

It does end up creating a sequence with one item matching the nodes date, but conceptually makes sense to have an until field, just might need to make that required on the form and it should be goods to go.