In Settings.php, you currently have
$SITE['WDdateMDY'] = false; // for weather software date format of month/day/year. =false for day/month/year
meaning your dates are in day/month/year format.
In WCT-defs.php, the $date is set by
$time = $WX['t12'];
$date = $WX['da'];
while the $WCTtags.php?sce=dump shows
$WX['t12'] = '12:59 PM'; // Time (12 hour clock)
$WX['da'] = '03/29/12'; // Date in the format of month/day/year
so the 'current' checker is trying to check '03/29/12 12:59 PM' as a date and PHP is balking at the assembled date of '2012-29-03 12:59'.
I suggest you temporarily change WCT-defs.php to
$date = $WX['de'];
and that should solve the problem.
I'll work up a fix to select US or Euro format date as the source based on the $SITE['WDdateMDY'] preference .. sorry about that, it was my ommission --