On the reports page, the text boxes for start and end time require a text string suitable for JavaScript?'s Date.parse() method:
https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Global_Objects/Date/parse
The form of which is similar to:
"Mon, 25 Dec 1995 13:30:00 GMT"
It does not accept more useful RFC-compliant date strings. The report page should at least say this, if not offer a reasonable date picker widget.
Perhaps more importantly, the tests for invalid dates don't work as intended in the JavaScript? code. I never see the 'alert' statement no matter what I enter. I don't have more detailed information as I'm having difficulty getting any breakpoints to work in the code.
Testing with Trac 0.11, TAEP 0.8.0, FireFox? 3.5x.