Please enable PHP error logging on the windows box and check the PHP error log. Check the webservers error log as well.

The error logs should contain more information why the request crashes. I assume some memory limit or probably missing functions.

Hi, The PHP log file returns multiple copies of the following

[17-Aug-2011 13:22:02] PHP Notice: Undefined index: questions in C:\inetpub\wwwroot\SiriusNewestTesting\admin\classes\quexml\quexmlpdf.php on line 1182
[17-Aug-2011 13:22:02] PHP Notice: Undefined index: questions in C:\inetpub\wwwroot\SiriusNewestTesting\admin\classes\quexml\quexmlpdf.php on line 1201
[17-Aug-2011 13:22:02] PHP Warning: array_slice() expects parameter 1 to be array, null given in C:\inetpub\wwwroot\SiriusNewestTesting\admin\classes\quexml\quexmlpdf.php on line 1201
[17-Aug-2011 13:22:02] PHP Warning: Invalid argument supplied for foreach() in C:\inetpub\wwwroot\SiriusNewestTesting\admin\classes\quexml\quexmlpdf.php on line 1201

PHP memory_limit is set to 128M per script.

PHP Notices and Warnings are not the cause of a 500 error, more the Fatal error ones. What does your webserver log shows?

Ok. I enabled failed request tracing on IIS and this is what it spit out.

148. — FASTCGI_WAITING_FOR_RESPONSE 08:41:41.647

149. i MODULE_INFORMATION ModuleName="FastCgiModule", Data1="FASTCGI_SETSTATUS", Data2="500 Internal Server Error", ErrorCode="The operation completed successfully. (0x0)" 08:41:56.647

150. r MODULE_SET_RESPONSE_ERROR_STATUS
     Warning ModuleName="FastCgiModule", Notification="EXECUTE_REQUEST_HANDLER", HttpStatus="500", HttpReason="Internal Server Error", HttpSubStatus="0", ErrorCode="The operation completed successfully. (0x0)", ConfigExceptionInfo="" 08:41:56.647

151. i FASTCGI_RESPONSE_WRITTEN 08:41:56.647

152. — NOTIFY_MODULE_COMPLETION ModuleName="FastCgiModule", Notification="EXECUTE_REQUEST_HANDLER", NotificationStatus="NOTIFICATION_CONTINUE" 08:41:56.647

Is there a specific FastCGI error log?
I tried enabling fastcgi.logging in php.ini but no errors seem to be logged

I am not familiar with IIS / PHP on Windows - but can you please try the following:

Are you able to export to queXML using the following method:

"Display/Export" -> "Export Survey" -> "queXML survey XML format (*.xml)"

This should just export a queXML file (not the PDF/associated files)

Also can you please confirm that you have set the temporary directory permissions correctly

Hi,

Yes, I can export to queXML and get just the .xml file.

All permissions ( for \tmp ) are set correctly since I can import templates, surveys, groups etc..

Figured it out.

Firstly:

I am running on Version 1.91+ Build 10695 so whenever I run the queXML + PDF export it complained about the following

C:\inetpub\wwwroot\limesurvey\admin\classes\tcpdf\tcpdf.php on line 7586 Deprecated: Function ereg() is deprecated in

and

it was missing definition for setFontSubsetting() which was supposed to be in the TCPDF lib.

I had to copy class\TCPDF from Version 1.91+ Build 10746. Now works fine!

Secondly:

A (smaller) problem was in the admin/quexmlsurvey.php

the line:
header("Content-Length: $len; \n"); \ unix new-line
had to be replaced with :
header("Content-Length: $len");

additionally had to flush the buffer before returning the file. e.g:

ob_clean();
flush();
readfile($zipfile);

This caused problem when the server was trying to send the requested file.

Thanks for reporting the required changes to quexmlsurvey.php. I have made those changes in revision 10888.