Hi, During the install, when i run this command "./sax_parser_print.pl", i've the following error Koha wants something like: XML::LibXML::SAX::Parser=HASH(0x81fe220) You have: XML::SAX::Expat=HASH(0x99127b0) Looks bad, check INSTALL.* documentation. I check my ParserDetails.ini and something miss (Sax Parser) [XML::SAX::PurePerl] http://xml.org/sax/features/namespaces = 1 [XML::LibXML::SAX] http://xml.org/sax/features/namespaces = 1 [XML::SAX::Expat] http://xml.org/sax/features/namespaces = 1 http://xml.org/sax/features/external-general-entities = 1 http://xml.org/sax/features/external-parameter-entities = 1 I think the following lines give the main reason but i don't know how to do root@kohadev:/home/koha/kohaclone# cpan XML::LibXML::SAX::Parser Going to read '/root/.cpan/Metadata' Database was generated on Thu, 05 Sep 2013 04:29:04 GMT Running install for module 'XML::LibXML::SAX::Parser' Running make for S/SH/SHLOMIF/XML-LibXML-2.0104.tar.gz Checksum for /root/.cpan/sources/authors/id/S/SH/SHLOMIF/XML-LibXML-2.0104.tar.gz ok CPAN.pm: Going to build S/SH/SHLOMIF/XML-LibXML-2.0104.tar.gz enable native perl UTF8 running xml2-config...didn't manage to get libxml2 config, guessing options: LIBS='-L/usr/local/lib -L/usr/lib -lxml2 -lm' INC='-I/usr/local/include -I/usr/include' If this is wrong, Re-run as: $ /usr/bin/perl Makefile.PL LIBS='-L/path/to/lib' INC='-I/path/to/include' Checking for ability to link against xml2...no Checking for ability to link against libxml2...libxml2, zlib, and/or the Math library (-lm) have not been found. Try setting LIBS and INC values on the command line Or get libxml2 from http://xmlsoft.org/ If you install via RPMs, make sure you also install the -devel RPMs, as this is where the headers (.h files) are. Also, you may try to run perl Makefile.PL with the DEBUG=1 parameter to see the exact reason why the detection of libxml2 installation failed or why Makefile.PL was not able to compile a test program. No 'Makefile' created SHLOMIF/XML-LibXML-2.0104.tar.gz /usr/bin/perl Makefile.PL INSTALLDIRS=site -- NOT OK Running make test Make had some problems, won't test Running make install Make had some problems, won't install Could not read metadata file. Falling back to other methods to determine prerequisites Thank you for your help Best regards, Samuel