I get the following notices, if I run the attached survey:
Notice: Undefined variable: thistype in /home/.sites/962/site989/web/limesurvey/common.php on line 6142

Notice: Undefined variable: thistype in /home/.sites/962/site989/web/limesurvey/common.php on line 6142

Notice: Undefined variable: cq_gid in /home/.sites/962/site989/web/limesurvey/common.php on line 6158

Notice: Undefined variable: cq_gid in /home/.sites/962/site989/web/limesurvey/common.php on line 6286

This is no bug, you juste have to use YYY-MM-DD format as the constant value because conditions are independant on the date-format defined in a specific language of a survey.

I've updated Documentation.
http://docs.limesurvey.org/tiki-index.php?page=Setting+conditions+v1.85#Setting_a_constant_comparison_value_for_a_quot_Date_quot_Question_Type

Thanks, lemeur. I changed the date constants to the correct format and it fixed the problem. Oddly, if I display the value of the entered date in the text of a subsequent question (using INSERTANS), the date is displayed as dd.mm.yyyy.

Also, in the survey I uploaded (with the date constant modified to the correct format) and with $debug = 1, I still get the four undefined variable error messages in one case on question code q4.

The condition on q4 is <date> not equal to 2009-10-28. If I enter another date in the previous question, the condition is triggered and I get the appropriate message, but the screen also shows the four error message.

Thanks for the quick answer!

bkg

the error message you see is because your survey structure contains a strange condition for question q4: it has cqid field set to '0' which is not normal...

Juste delete the condition and create it again, this should fix the issue.

Carsten, I assign this one to you: the remaining issue is about the format used to display INSERTANS: answers corresponding to date questions.

It seems that the getextendedanswer() function in common.php always returns a d.m.Y date format

getextendedanswer($fieldcode, $value, $format='', $dateformatphp='d.m.Y')
...

line 2047:
$datetimeobj = new Date_Time_Converter($value , "Y-m-d H:i:s");
$value=$datetimeobj->convert($dateformatphp);

Do you think we should change this ?

Fixed remaining issues with INSERTANS