HTMLDOC Problem:

Htmldoc produced no pdf-output.
Commandline:
typo3conf/ext/htmldoc_linux/bin/htmldoc --datadir typo3conf/ext/htmldoc_linux/share/htmldoc -t pdf13  --webpage -f /var/www/vhosts/strennberger.at/httpdocs/typo3temp/hd_07oPnU - 2>/var/www/vhosts/strennberger.at/httpdocs/typo3temp/se_I2giKn

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.
typo3conf/ext/htmldoc_linux/bin/htmldoc: error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory

These are the first 80 chars of the output of the htmldoc command. Regularily this should begin with %PDF:

This is the html-data passed to htmldoc:
<!DOCTYPE html
	PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<!-- FOOTER RIGHT "$PAGE" -->
<!-- FOOTER CENTER "" -->
<!-- FOOTER LEFT "" -->
<!-- HEADER RIGHT "" -->
<!-- HEADER CENTER "$TITLE" -->
<!-- HEADER LEFT "" -->
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />

<!-- 
	This website is brought to you by TYPO3 - get.content.right
	TYPO3 is a free open source Content Management Framework created by Kasper Skaarhoj and licensed under GNU/GPL.
	TYPO3 is copyright 1998-2005 of Kasper Skaarhoj. Extensions are copyright of their respective owners.
	Information and contribution at http://www.typo3.com
-->

	<style type="text/css">
		/*<![CDATA[*/
	<!--
	/* default styles for extension "tx_slideshow_pi1" */
		.tx-slideshow-pi1 {
			text-align: center;
		}
/* default styles for extension "tx_flvplayer_pi1" */
		.tx-flvplayer-pi1 {
			text-align: center;
		}
	-->
		/*]]>*/
	</style>
	<title>strennberger.at: Transport</title>
	<meta name="generator" content="TYPO3 3.8 CMS" />
	<script type="text/javascript">
		/*<![CDATA[*/
	<!--
		browserName = navigator.appName;
		browserVer = parseInt(navigator.appVersion);
		var msie4 = (browserName == "Microsoft Internet Explorer" && browserVer >= 4);
		if ((browserName == "Netscape" && browserVer >= 3) || msie4 || browserName=="Konqueror" || browserName=="Opera") {version = "n3";} else {version = "n2";}
			// Blurring links:
		function blurLink(theObject)	{	//
			if (msie4)	{theObject.blur();}
		}
		
	// -->
		/*]]>*/
	</script>


</head>
<body bgcolor="#FFFFFF">

	<!--  CONTENT ELEMENT, uid:900/text [begin] -->
		<a name="900"></a><img src="clear.gif" width="1" height="20" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Text: [begin] -->
			<blockquote style="margin-bottom:0;margin-top:0;"><p class="font-14b-gray">Wir liefern frei Haus nach Kundenwunsch</p>
<p class="bodytext">&nbsp;</p></blockquote><ul>
<ul>
<ul>
<li>
<div class="font-14n-gray" align="left">mit Motorwagen</div></li>
<li>
<div class="font-14n-gray" align="left">LKW-Zug</div></li>
<li>
<div class="font-14n-gray" align="left">4-Achser</div></li>
<li>
<div class="font-14n-gray" align="left">Satteln</div></li>
<li>
<div class="font-14n-gray" align="left">Silos</div></li></ul></ul></ul>
		<!--  Text: [end] -->
			
	<!--  CONTENT ELEMENT, uid:900/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:901/image [begin] -->
		<a name="901"></a><img src="clear.gif" width="1" height="50" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [begin] -->
			<div style="text-align:center;"><table width="389" border="0" cellspacing="0" cellpadding="0" style="margin-left: auto; margin-right: auto" class="imgtext-table"><tr><td colspan="3"><img src="clear.gif" width="389" height="1" alt="" /></td></tr><tr><td valign="top"><img src="uploads/pics/lkw_3.jpg" width="200" height="118" border="0" align="top" alt="" title="" /><br /></td><td><img src="clear.gif" width="10" height="1" border="0" alt="" title="" /></td><td valign="top"><img src="uploads/pics/lkw_1.jpg" width="179" height="118" border="0" align="top" alt="" title="" /><br /></td></tr></table></div><img src="clear.gif" width="1" height="6" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [end] -->
			
	<!--  CONTENT ELEMENT, uid:901/image [end] -->
		
	<!--  CONTENT ELEMENT, uid:902/text [begin] -->
		<a name="902"></a>
		<!--  Text: [begin] -->
			<p align="center" class="font-14b-gray">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Sattelzug</p>
		<!--  Text: [end] -->
			<img src="clear.gif" width="1" height="25" border="0" class="spacer-gif" alt="" title="" /><br />
	<!--  CONTENT ELEMENT, uid:902/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:903/image [begin] -->
		<a name="903"></a><img src="clear.gif" width="1" height="30" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [begin] -->
			<div style="text-align:center;"><table width="365" border="0" cellspacing="0" cellpadding="0" style="margin-left: auto; margin-right: auto" class="imgtext-table"><tr><td colspan="3"><img src="clear.gif" width="365" height="1" alt="" /></td></tr><tr><td valign="top"><img src="uploads/pics/silos_2.jpg" width="188" height="110" border="0" align="top" alt="" title="" /><br /></td><td><img src="clear.gif" width="10" height="1" border="0" alt="" title="" /></td><td valign="top"><img src="uploads/pics/lkw_4.jpg" width="167" height="110" border="0" align="top" alt="" title="" /><br /></td></tr></table></div><img src="clear.gif" width="1" height="6" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [end] -->
			
	<!--  CONTENT ELEMENT, uid:903/image [end] -->
		
	<!--  CONTENT ELEMENT, uid:904/text [begin] -->
		<a name="904"></a>
		<!--  Text: [begin] -->
			<p align="center" class="font-14b-gray">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Silo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4-Achser</p>
		<!--  Text: [end] -->
			<img src="clear.gif" width="1" height="25" border="0" class="spacer-gif" alt="" title="" /><br />
	<!--  CONTENT ELEMENT, uid:904/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:905/image [begin] -->
		<a name="905"></a><img src="clear.gif" width="1" height="30" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [begin] -->
			<div style="text-align:center;"><table width="190" border="0" cellspacing="0" cellpadding="0" style="margin-left: auto; margin-right: auto" class="imgtext-table"><tr><td colspan="1"><img src="clear.gif" width="190" height="1" alt="" /></td></tr><tr><td valign="top"><img src="uploads/pics/silo_1.jpg" width="190" height="143" border="0" align="top" alt="" title="" /><br /></td></tr></table></div><img src="clear.gif" width="1" height="6" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [end] -->
			
	<!--  CONTENT ELEMENT, uid:905/image [end] -->
		
	<!--  CONTENT ELEMENT, uid:906/text [begin] -->
		<a name="906"></a>
		<!--  Text: [begin] -->
			<p align="center" class="font-14b-gray">Silo</p>
		<!--  Text: [end] -->
			<img src="clear.gif" width="1" height="25" border="0" class="spacer-gif" alt="" title="" /><br />
	<!--  CONTENT ELEMENT, uid:906/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:1040/image [begin] -->
		<a name="1040"></a><img src="clear.gif" width="1" height="35" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [begin] -->
			<div style="text-align:center;"><table width="25" border="0" cellspacing="0" cellpadding="0" style="margin-left: auto; margin-right: auto" class="imgtext-table"><tr><td colspan="1"><img src="clear.gif" width="25" height="1" alt="" /></td></tr><tr><td valign="top"><a href="index.php?id=310" target="_top"><img src="uploads/pics/infobutton_02.gif" width="25" height="25" border="0" align="top" alt="" title="" /></a><br /></td></tr></table></div><img src="clear.gif" width="1" height="6" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [end] -->
			
	<!--  CONTENT ELEMENT, uid:1040/image [end] -->
		
</body>
</html>