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_F1uOMm - 2>/var/www/vhosts/strennberger.at/httpdocs/typo3temp/se_tMxJBE

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: Kontakt</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>
<script type="text/javascript" src="t3lib/jsfunc.validateform.js"></script>

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

	<!--  CONTENT ELEMENT, uid:1053/text [begin] -->
		<a name="1053"></a><img src="clear.gif" width="1" height="25" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Text: [begin] -->
			<blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><p class="font-14b-gray">Am meisten interessiert mich der Bereich:</p></blockquote></blockquote>
		<!--  Text: [end] -->
			<img src="clear.gif" width="1" height="40" border="0" class="spacer-gif" alt="" title="" /><br />
	<!--  CONTENT ELEMENT, uid:1053/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:1052/mailform [begin] -->
		<a name="1052"></a><img src="clear.gif" width="1" height="30" border="0" class="spacer-gif" alt="" title="" /><br /><form action="index.php?id=359" name="d9d36cecd24e4e28d1c064890e11ffb9" enctype="multipart/form-data" method="post" target="_top" onsubmit="return validateForm('d9d36cecd24e4e28d1c064890e11ffb9','name,Name%3A,Addresse,Addresse%3A,email,Email%3A','','','')"><div style="display:none;"><input type="hidden" name="html_enabled" value="1" /><input type="hidden" name="subject" value="WEB-Kontaktforumlar" /><input type="hidden" name="locationData" value="359:tt_content:1052" /></div>
		<!--  Mail form inserted: [begin] -->
			<div id="MailForm"><table align="center"><tr><td class="csc-form-labelcell"><p class="csc-form-label">Granulate und Mehle</p></td><td class="csc-form-fieldcell"><input type="checkbox" value="1" name="Granulate_und_Mehle" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label">Das gesamte Strennberger Marmor-Programm</p></td><td class="csc-form-fieldcell"><input type="checkbox" value="1" name="Das_gesamte_Strennberger_Marmo" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label">Kleine Materialmusterproben von den Marmorkörnungen</p></td><td class="csc-form-fieldcell"><input type="checkbox" value="1" name="Kleine_Materialmusterproben_vo" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label">Informationen zur Gartengestaltung</p></td><td class="csc-form-fieldcell"><input type="checkbox" value="1" name="Informationen_zur_Gartengestal" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label-req">Name:</p></td><td class="csc-form-fieldcell"><input type="text" name="name" size="40" value="" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label-req">Addresse:</p></td><td class="csc-form-fieldcell"><textarea name="Addresse" cols="40" rows="3" wrap="virtual">
</textarea></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label-req">Email:</p></td><td class="csc-form-fieldcell"><input type="text" name="email" size="40" value="" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label">Kontaktieren Sie mich</p></td><td class="csc-form-fieldcell"><input type="checkbox" value="1" name="Kontakt" checked="checked" /></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label">Mitteilung</p></td><td class="csc-form-fieldcell"><textarea name="Mitteilung" cols="40" rows="15" wrap="virtual">
</textarea></td></tr><tr><td class="csc-form-labelcell"><p class="csc-form-label"></p></td><td class="csc-form-fieldcell"><input type="submit" name="formtype_mail" value="Abschicken" /></td></tr></table></div>
		<!--  Mail form inserted: [end] -->
			</form>
	<!--  CONTENT ELEMENT, uid:1052/mailform [end] -->
		
	<!--  CONTENT ELEMENT, uid:1051/text [begin] -->
		<a name="1051"></a><img src="clear.gif" width="1" height="30" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Text: [begin] -->
			<blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><p class="font-14b-gray"><u><a href="index.php?id=335" target="_top">Unsere AGB`s</a></u></p></blockquote></blockquote>
		<!--  Text: [end] -->
			
	<!--  CONTENT ELEMENT, uid:1051/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:1050/text [begin] -->
		<a name="1050"></a><img src="clear.gif" width="1" height="40" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Text: [begin] -->
			<blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><blockquote style="margin-bottom:0;margin-top:0;"><p class="font-14n-gray">Gerne stehen wir telefonisch zur Verfügung:</p>
<p class="font-16b-gray">+43 (0)3144 / 70803</p>
<p class="bodytext">&nbsp;</p>
<p class="font-14n-gray">Weiters erreichen Sie uns:</p>
<p class="font-14n-gray">Fax: +43 (0)3144 / 70803-6</p>
<p class="font-14n-gray"><a href="mailto:marmor@strennberger.at">marmor@strennberger.at</a></p></blockquote></blockquote></blockquote></blockquote></blockquote></blockquote>
		<!--  Text: [end] -->
			
	<!--  CONTENT ELEMENT, uid:1050/text [end] -->
		
	<!--  CONTENT ELEMENT, uid:1049/image [begin] -->
		<a name="1049"></a><img src="clear.gif" width="1" height="40" border="0" class="spacer-gif" alt="" title="" /><br />
		<!--  Image block: [begin] -->
			<div style="text-align:center;"><table width="169" 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="169" height="1" alt="" /></td></tr><tr><td valign="top"><a href="http://firmena-z.wko.at/ecg.asp?mg=5143425" target="_blank"><img src="uploads/pics/ecg_02.gif" width="169" height="23" 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:1049/image [end] -->
		
</body>
</html>