The Deimos Project

With some stats, there is a feature to select the dates from with you want to see the statistics. The standard date is a week ago, like 2009-10-08.
But when you select another date from the calendar, you get the date back like 08-10-2009, and then when you press 'Generate!', you'll get an error...

Is there a way to fix this, or do i have to fill in the dates myself