C:\>cpan

cpan shell -- CPAN exploration and modules installation (v1.9402)
Enter 'h' for help.


cpan> install HTTP::TreeBuilder
Fetching with LWP:
  http://ppm.activestate.com/CPAN/authors/01mailrc.txt.gz
Going to read 'C:\Perl\cpan\sources\authors\01mailrc.txt.gz'
............................................................................DONE
Fetching with LWP:
  http://ppm.activestate.com/CPAN/modules/02packages.details.txt.gz
Alert: While trying to 'parse' YAML file
 'C:\Perl\cpan\FTPstats.yml'
with 'YAML::XS' the following error was encountered:
  Usage: YAML::XS::LibYAML::Load(yaml_sv) at C:\Perl\lib/YAML/XS.pm line 70.

Going to read 'C:\Perl\cpan\sources\authors\01mailrc.txt.gz'
............................................................................DONE
Going to read 'C:\Perl\cpan\sources\modules\02packages.details.txt.gz'
  Database was generated on Wed, 03 Feb 2010 22:45:58 GMT
............................................................................DONE
Fetching with LWP:
  http://ppm.activestate.com/CPAN/modules/03modlist.data.gz
Alert: While trying to 'parse' YAML file
 'C:\Perl\cpan\FTPstats.yml'
with 'YAML::XS' the following error was encountered:
  Usage: YAML::XS::LibYAML::Load(yaml_sv) at C:\Perl\lib/YAML/XS.pm line 70.

Lockfile removed.