Warning: exec() has been disabled for security reasons in /var/www/virtual/lamifix.ch/htdocs/typo3conf/ext/pdf_generator/gen_pdf.php on line 174

Warning: exec() has been disabled for security reasons in /var/www/virtual/lamifix.ch/htdocs/typo3conf/ext/pdf_generator/gen_pdf.php on line 202
htmldoc problem

HTMLDOC Problem:

Htmldoc produced no pdf-output.
Commandline:

/usr/bin/htmldoc --size A4 --browserwidth 800 --top 1.5cm --bottom 1.5cm --left 1.5cm --right 1.5cm --bodyfont Arial --fontsize 9 --logoimage /var/www/virtual/lamifix.ch/htdocs/fileadmin/template/main/images/logotrans.gif -t pdf13  --webpage -f /var/www/virtual/lamifix.ch/htdocs/typo3temp/hd_DsDg1c - 2>/var/www/virtual/lamifix.ch/htdocs/typo3temp/se_C0Bj3z

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.