When I try to create a pdf output of a statistic with all answers, I receive a "500 internal Server Error".
All other pdf exports seem to work fine. HTML and Excel work has well.
The only entry in the error.log is:

[Fri Oct 14 11:37:23.168325 2016] [fcgid:warn] [pid 24781] [client 92.216.225.20:63990] mod_fcgid: read data timeout in 45 seconds, referer: xxx.xx/surveys/index.php/admin/statistic...index/surveyid/46792
[Fri Oct 14 11:37:23.168401 2016] [core:error] [pid 24781] [client 92.216.225.20:63990] End of script output before headers: index.php, referer: xxx.xx/surveys/index.php/admin/statistic...index/surveyid/46792

I am running Version 2.52+160920.

Anybody having any ideas?

Thanx

Thomas

Not a direct solution, but an idea about how to find the solution:
bfy.tw/8BaQ