handbook install error

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I get an error during current handbook installation (FreeBSD 6.2-STABLE,  
docproj-nojadetex-1.17):

'===> en_US.ISO8859-1/books/handbook (install)
/bin/mkdir -p /usr/doc/en_US.ISO8859-1/share/sgml
env SGML_CATALOG_FILES=  
XML_CATALOG_FILES="file:///usr/doc/en_US.ISO8859-1/books
/handbook/catalog-cwd.xml   
file:///usr/doc/en_US.ISO8859-1/share/sgml/catalog.xm
l  file:///usr/doc/en_US.ISO8859-1/share/sgml/catalog.xml   
file:///usr/doc/share
/sgml/catalog.xml  file:///usr/doc/share/sgml/catalog-common.xml   
file:///usr/ww
w/./share/sgml/catalog.xml  file:///usr/www/share/sgml/catalog.xml   
file:///usr/
www/share/sgml/catalog-common.xml  file:///usr/local/share/xml/catalog"  
/usr/loc
al/bin/xsltproc --nonet  --param 'transtable.xml'  
"'/usr/doc/share/sgml/transtab
le.xml'"  --param 'transtable-target-element' "'country'"  --param  
'transtable-w
ord-group' "'country'"  --param 'transtable-mode' "'sortkey'"   
/usr/doc/share/sg
ml/transtable-local.xsl /usr/doc/share/sgml/mirrors.xml  | env -i  
LANG="en_US.IS
O8859-1" /usr/bin/sort -f >  
/usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.sort
.tmp
env -i /usr/bin/grep "^<?xml" <  
/usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.
sort.tmp > /usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.sort
echo "<sortkeys>" >> /usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.sort
env -i /usr/bin/awk '/@sortkey@/ {sub(/@sortkey@/, ++line); print;}' <  
/usr/doc/
en_US.ISO8859-1/share/sgml/mirrors.xml.sort.tmp >>  
/usr/doc/en_US.ISO8859-1/shar
e/sgml/mirrors.xml.sort
echo '</sortkeys>' >> /usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.sort
env SGML_CATALOG_FILES=  
XML_CATALOG_FILES="file:///usr/doc/en_US.ISO8859-1/books
/handbook/catalog-cwd.xml   
file:///usr/doc/en_US.ISO8859-1/share/sgml/catalog.xm
l  file:///usr/doc/en_US.ISO8859-1/share/sgml/catalog.xml   
file:///usr/doc/share
/sgml/catalog.xml  file:///usr/doc/share/sgml/catalog-common.xml   
file:///usr/ww
w/./share/sgml/catalog.xml  file:///usr/www/share/sgml/catalog.xml   
file:///usr/
www/share/sgml/catalog-common.xml  file:///usr/local/share/xml/catalog"  
/usr/loc
al/bin/xsltproc --nonet -o  
/usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml  --pa
ram 'transtable.xml' "'/usr/doc/share/sgml/transtable.xml'"  --param  
'transtable
-target-element' "'country'"  --param 'transtable-word-group' "'country'"   
--par
am 'transtable-sortkey.xml'  
"'/usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.so
rt'"  /usr/doc/share/sgml/transtable-local.xsl  
/usr/doc/share/sgml/mirrors.xml
/bin/rm -f /usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml.sort  
/usr/doc/en_US.I
SO8859-1/share/sgml/mirrors.xml.sort.tmp
echo '<!ENTITY base "../../../..">' >  
/usr/doc/en_US.ISO8859-1/books/handbook/au
togen.ent
env SGML_CATALOG_FILES=  
XML_CATALOG_FILES="file:///usr/doc/en_US.ISO8859-1/books
/handbook/catalog-cwd.xml   
file:///usr/doc/en_US.ISO8859-1/share/sgml/catalog.xm
l  file:///usr/doc/en_US.ISO8859-1/share/sgml/catalog.xml   
file:///usr/doc/share
/sgml/catalog.xml  file:///usr/doc/share/sgml/catalog-common.xml   
file:///usr/ww
w/./share/sgml/catalog.xml  file:///usr/www/share/sgml/catalog.xml   
file:///usr/
www/share/sgml/catalog-common.xml  file:///usr/local/share/xml/catalog"  
/usr/loc
al/bin/xsltproc --nonet  -o mirrors.sgml.ftp.inc.tmp --param 'type'  
"'ftp'"  --p
aram 'proto' "'ftp'"  --param 'target' "'handbook/mirrors/chapter.sgml'"   
--para
m transtable.xml "'/usr/doc/share/sgml/transtable.xml'"   
/usr/doc/share/sgml/mir
rors-local.xsl /usr/doc/en_US.ISO8859-1/share/sgml/mirrors.xml
runtime error: file /usr/doc/share/sgml/mirrors-master.xsl line 97 element  
choos
e
Variable 'mirrors-docbook-country-index-without-period' has not been  
declared.
*** Error code 10

Stop in /usr/doc/en_US.ISO8859-1/books/handbook.
*** Error code 1

Stop in /usr/doc/en_US.ISO8859-1/books.
*** Error code 1

Stop in /usr/doc/en_US.ISO8859-1.
*** Error code 1

Stop in /usr/doc.'

I had this error a few times after cvsup'ing. It's most likely my system  
problem but I don't know what.