WPC - Custom Web Form - Cannot render container

Hello!
I've created custom web form for WPC (wpc_utg_sitelink) and gone through customizing provided in
[http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/2041eb17-6001-2b10-b08d-b95ce55fa9b7&overridelayout=true]
It looks fine at designtime.
In runtime i get following:
Cannot render container : Could not load stylesheet.com.sap.engine.lib.xml.util.
NestedException: Error parsing query. -> java.lang.ArrayIndexOutOfBoundsException
are there errors in my wpc_utg_sitelink.xsl file syntax?
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:wpc="com.sap.nw.wpc.km.service.linkmanager.XsltHelper">
<xsl:output method="html"/>
<xsl:template match="/">
<span>
<xsl:if test="starts-with(document/elements/element[@type='image'],'/')"></xsl:if>
<h2>
<a>
<xsl:if test="string-length(document/elements/element[@type='itemlink']/@rid)!=0">
<xsl:attribute name="href">
<xsl:value-of select="wpc:getAccessLink(string(document/elements/element[@type='itemlink']/@rid))"/>
</xsl:attribute>
<xsl:if test="document/elements/element[@type='itemlink']/@targetnew='true'">
<xsl:attribute name="target"> new </xsl:attribute>
</xsl:if>
</xsl:if>
<xsl:value-of select="document/elements/element[@type='title']" disable-output-escaping="yes"/>
</a>
<xsl:if test="document/properties/property[@type='isnew']/@value)='true'">
<span>New!</span>
</xsl:if>
</h2>
<p>
<xsl:value-of select="document/elements/element[@type='text']" disable-output-escaping="yes"/>
</p>
</span>
</xsl:template>
</xsl:stylesheet>
Or may be some problems in customizing?
Thanks!
Edited by: Ivan O. Ivanov on Sep 21, 2009 5:15 PM

solved!

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