The regional settings for my PC sets the date format to dd/mm/yyyy.
When I attempt to create a filter using a date past the 12th day of the month (eg. 15/05/2007) I receive an invalid filter error.
I can create the filter without problem if I change my regional settings to English(United States) with a mm/dd/yyyy date format.
I assume the filter is being validated against the US date format even when the regional settings are set differently.
The regional setting used for both the PC and OnTime is English (Australia).
OnTime 2007 v7.0.2.7191