c:\temp\xml-twig-3.00\xml-twig-3.00]perl Makefile.PL Checking if your kit is complete... Looks good Have C:\Program Files\Languages\Perl\lib\Config.pm expected C:\PROGRA~1\Languages\Perl\lib\Config.pm Your perl and your Config.pm seem to have different ideas about the architecture they are running on. Perl thinks: [lib] Config says: [MSWin32-x86-multi-thread] This may or may not cause problems. Please check your installation of perl if you have problems building this extension. Writing Makefile for XML::Twig