On simple transformation xsltproc Segmentation fault.

src1.xml
===============
<?xml version="1.0" encoding="windows-1251"?>
<!-- edited with XMLSPY v2004 rel. 2 U (http://www.xmlspy.com) by Victor 
Prylipko (Linia) -->
<root>
    <colls COL_COD="PT" COL_NAME="Арго" CURR_ID_0="" CURR_ID_1="" CURR_ID_2="" 
CURR_ID_3="">
        <goodcoll CODE="2655" ART="PA310ST" NAME="Комплект стекол для А310 тон" 
WEIGHT="10" VOLUME="0.09" GABS_W="72" GABS_H="112" GABS_D="0.4" SH_DESC="" 
SUPP_ART="PA310ST" NUM="0" COL_COD="PT" 
IMAGE_="/images/goods/image/PA310ST.gif" 
SCHEMA_="/images/goods/schema/PA310ST.gif">
            <currency CURRENCY_="RUR" OPT="1" ROZN="2" ZAKUP="3" IN="4"/>
            <currency CURRENCY_="USD" OPT="2" ROZN="3" ZAKUP="4" IN="5"/>
            <goodcomb GOOD_ID="63647" NUM_COLOR="0" COL_ID="24007" 
TITLE="пустой" COEF="0" ABS_COEF="0" RU_CODE="" EN_CODE="" PROPNAME_="C" 
MODEL_="">
                <ost NUM_TIP="0" TIP="0"/>
                <ost NUM_TIP="2" TIP="-3"/>
                <ost NUM_TIP="4" TIP="-4"/>
                <ost NUM_TIP="5" TIP="-4"/>
                <ost NUM_TIP="6" TIP="-4"/>
                <ost NUM_TIP="7" TIP="-3"/>
                <ost NUM_TIP="8" TIP="-3"/>
                <ost NUM_TIP="9" TIP="-3"/>
            </goodcomb>
        </goodcoll>
    </colls>
</root>

===============

empty_color_en_code.xsl
===============
<?xml version="1.0" encoding="windows-1251"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" encoding="windows-1251" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="EMPTY_EN_CODE_COLLS" match="/root/colls/goodcoll/goodcomb/@COL_ID
[../@EN_CODE = '']" use="../../../@COL_COD"/>
<xsl:key name="EMPTY_EN_CODE_COLRS" match="/root/colls/goodcoll/goodcomb/@COL_ID
[../@EN_CODE = '']" use="concat(.,':',../../../@COL_COD)"/>
<xsl:template match="/">
<root>
 <xsl:for-each select="/root/colls[key('EMPTY_EN_CODE_COLLS',@COL_COD)]">
  <xsl:copy>
   <xsl:copy-of select="@*"/>
   <xsl:for-each select="key('EMPTY_EN_CODE_COLLS',@COL_COD)[generate-id(.) = 
generate-id(key('EMPTY_EN_CODE_COLRS',concat(.,':',../../../@COL_COD)))]">
    <color>
     <xsl:copy-of select="../@TITLE | ../@RU_CODE | ."/>
    </color>
   </xsl:for-each>
  </xsl:copy>
 </xsl:for-each>
</root>
</xsl:template>
</xsl:stylesheet>
===============


root@des-free#xsltproc empty_color_en_code.xsl src1.xml
Segmentation fault (core dumped)                       
Press any key to continue...                           



root@des-free#uname -a
FreeBSD des-free.lini-a.ru 4.9-20040227-STABLE FreeBSD 4.9-20040227-STABLE #0: 
Sat Feb 28 00:08:18 GMT 2004     root@vic-free.lini-
a.ru:/usr/obj/usr/src/sys/GENERIC  i386


libxslt-1.1.5 installed from FreeBSD ports collection.

Same command with libxslt-1.1.4 - working good with result of transformation:

=================
<?xml version="1.0" encoding="windows-1251"?>
<root>
  <colls COL_COD="PT" COL_NAME="Арго" CURR_ID_0="" CURR_ID_1="" CURR_ID_2="" 
CURR_ID_3="">
    <color COL_ID="24007" TITLE="пустой" RU_CODE=""/>
  </colls>
</root>
=================