Can you see this error????

[Russ Ray]

Everyone:
I am working through a error I have within my XSLT stylesheet. First of all, I have design/implemented/tested the XSLT from outside the program and it works. However, when I roll it into my program and accomplish the transformation on the fly, I get an error. I have attempted to depict the error, the XML, and XSLT files correctly. Can you point me in the right direction??? What would cause this???
SystemID: file:///Catalog_to_Inventory.xsl; Line#: 39; Column#: 124
javax.xml.transform.TransformerException: Unknown error in XPath
This is the Style Sheet:

<xsl:template match="/">    
     <Catalog action="{BOOK_MODEL/@event}">
         <xsl:call-template name="Book_listing">
            <xsl:with-param name="books" select="//Object[@class='Book']"/>    
         </xsl:call-template>
         <xsl:call-template name="Book_content_objects">
         <xsl:with-param name="contents" select="//Object[@class='BookContent']"/> 
       </xsl:call-template>
         <xsl:call-template name="Book_subscription_objects">
         <xsl:with-param name="subscription" select="//Object[@class='Subscription']"/> 
       </xsl:call-template> 
       <xsl:call-template name="user_objects">
         <xsl:with-param name="list" select="//Object[@class='User']"/> 
       </xsl:call-template> 
     </Catalog>
   </xsl:template>     
   <!-- Build Book Object -->
   <xsl:template name="Book_listing">
       <xsl :-P	 aram name="books"/>
       <Book>
          <objID><xsl:value-of select="$books/@OBID"/></objID>
          <number><xsl:value-of select="$books/Attribute[@name='Number']"/></number>
          <type><xsl:value-of select="$books/Attribute[@name='Type']"/></type>
          <title><xsl:value-of select="$books/Attribute[@name='Title']"/></title>
          <classification><xsl:value-of select="$books/Attribute[@name='Classification']"/></classification>
          <revision><xsl:value-of select="$books/Attribute[@name='RevisionNumber']"/></revision>
          <updated><xsl:value-of select="$books/Attribute[@name='Updated']"/></updated>
          <xsl:call-template name="Book_Content_Ref">
Line 39:    <xsl:with-param name="contentObjRefs" select="$books/Attribute[@name='Book_Content_Refs']/NameValue"/>
          </xsl:call-template>
          <xsl:call-template name="Book_Subscribe_Ref">
            <xsl:with-param name="subObjRefs" select="$books/Attribute[@name='Book_Subscribe_ObjRefs']/NameValue"/>
          </xsl:call-template>
       </Books>    
   </xsl:template>
     <!-- Build Book Content Object References -->
   <xsl:template name="Book_Content_Ref">
     <xsl :-P	 aram name="contentObjRefs"/>
     <xsl:choose>
       <xsl:when test="$contentObjRefs">
         <xsl:variable name="first" select="$contentObjRefs[1]"/>
         <xsl:call-template name="Book_Content_Ref">
           <xsl:with-param name="contentObjRefs" select="$contentObjRefs[position()!=1]" />
         </xsl:call-template>
         <bookContentRef>
            <title><xsl:value-of select="$first/Value"/></title>
         </bookContentRef>
       </xsl:when>
       <xsl :-o	 therwise></xsl :-o	 therwise>
     </xsl:choose>           
   </xsl:template> 

This is a portion of the XML File:

<BOOK_MODEL event="UPDATE">
<Object class="Book" creationDate="2003/09/26-13:11:52:476" OBID="njAnk2isite-etestdb-ettable-objid"><!--TO Number-->
<Attribute name="Number" type="String" length="30">
<String>TO-00-21-15-23</String>
</Attribute>
<Attribute name="Type" type="String" length="30">
<String>Adventure</String>
</Attribute><!--TO Title-->
<Attribute name="Title" type="String" length="30">
<String>The Fine Art Of Zen</String>
</Attribute><!--Classification-->
<Attribute name="Classification" type="String" length="30">
<String>Easy Reading</String>
</Attribute><!--TO Classification-->
<Attribute name="RevisionNumber" type="String" length="30">
<String>1.0.2.234.12</String>
</Attribute><!--Last updated-->
<Attribute name="Updated" type="TimeStamp">
<TimeStamp>2003/09/26-11:11:54:325</TimeStamp>
</Attribute><!--Date TO Created-->
<Attribute name="CreationDate" type="TimeStamp">
<TimeStamp>1973/01/31-11:11:54.125</TimeStamp>
</Attribute><!--Office of Primary Responsibility(Ownership)-->
<Attribute name="Creator" type="String" length="30">
<String>John Doe</String>
</Attribute><!--Collection of Object References for Tech Order Content-->
<Attribute name="Book_Content_Refs" type="NVSet">
<NameValue>
<Name>Book_ContentRef</Name>
<Value>asd-fgh-234-Fed-01</Value>
</NameValue>
<NameValue>
<Name>Book_ContentRef</Name>
<Value>dfg-hjk-678-org-02</Value>
</NameValue>
</Attribute><!--Collection of Object References for Subscription-->
<Attribute name="Book_Subscribe_ObjRefs" type="NVSet">
<NameValue>
<Name>Book_Subscripe_ObjRef</Name>
<Value>pokie-dokie-dsf-ojn-01</Value>
</NameValue>
</Attribute>
</Object>
</BOOK_MODEL>

Thanks in advance for reading and review my effort!!!

[Ernest Friedman-Hill]

The error message basically says that this is a bug in the XSLT processor, not in your stylesheet so much. When you test this from the command line, are you using the same XSLT implementation as when it's embedded? I'm betting the answer is "no". Upgrade your XSLT library, if you can, and see if that helps.

[Russ Ray]

Administrator: You can close this topic.
For the benefit of the group: The problem deals with version 2.3.10 of Zalan. When I upgraded to version 2.5.1, the problem went away.
Thanks for a place to air the issue!!!