error executing path expression

Hi

I am getting an error "FATAL ERROR: The context item for an axis step is 
not a node"
on the line <xsl:if 
test="TopConcept/*[lower-case(name())=lower-case($archTerm)]"></xsl:if>.
My structure is such
---------------------------------------------------------------------------------------------------------------------
<xsl:template match="/">
       <TopConcept name="{TopConcept/@name}">
           <xsl:apply-templates select="TopConcept"/>
       </TopConcept>
   </xsl:template>
  
   <xsl:template match="TopConcept">
           <xsl:for-each select="/*/*/O/Class[text()=$notPresent]">
               <xsl:variable name="clsName" 
select="..//preceding-sibling::A/Class/text()"/>
                    <xsl:if 
test="matches($clsName,'(.)([A-Z])')"><!--only call the template if 
there is any word to split-->
                       <xsl:call-template name="splitTerm">
                           <xsl:with-param name="AName" select="$clsName"/>
                       </xsl:call-template>
                   </xsl:if>
             </xsl:for-each>
   </xsl:template>
  
   <xsl:template name="splitTerm">
       <xsl:param name="AName"/> <!-- Eg: AName = 'NextTime' -->
       <xsl:variable name="split" 
select="tokenize(replace($AName,'(.)([A-Z])','$1 $2'), ' ')"/>
  
       <xsl:for-each select="$split">
           <xsl:variable name="ATerm" select="."/> <!-- ATerm = 'Next' -->
           <xsl:if test="string-length($ATerm)>2">
               <xsl:if 
test="TopConcept/*[lower-case(name())=lower-case($archTerm)]"></xsl:if>   
     <!--look for existence of <Next> as a child of <TopConcept>  -->
                                                                       
                                                                       
                                   <!-- PROBLEM WITH THIS LINE OF CODE-->
             </xsl:if>
       </xsl:for-each>
   </xsl:template>
---------------------------------------------------------------------------------------------------------------------
I have tested and seen that current( ) does not return a node( ) but 
rather the atomic value 'Next' for instance. Prior to using the 
'saxon:next-in-chain' feature the code was working fine when I went back 
to the top node to start a search but now it generates an error. Ive 
tried several options but none seem to resolve the issue.
Could someone please help.

Thanks
Rahil
  

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