HTMLDOC Problem:

Htmldoc produced no pdf-output.
Commandline:
/usr/bin/htmldoc -t pdf13  --webpage -f /var/www/html/typo3temp/hd_2nnIPx - 2>/var/www/html/typo3temp/se_igRLId

This is the (stderr) output of the htmldoc command without the htmldoc_append parameters:
If you see no errors here please check your htmldoc_append parameters too.
sh: 1: /usr/bin/htmldoc: not found