Thanks for that. So I ran the  cpan YARML code and I get: 

$ cpan YAML
CPAN: Storable loaded ok (v2.18)
Going to read /Users/Erika/.cpan/Metadata
  Database was generated on Thu, 03 Jun 2010 11:27:12 GMT
Running install for module 'YAML'
CPAN: Data::Dumper loaded ok (v2.121_14)
'YAML' not installed, falling back to Data::Dumper and Storable to rea
+d prefs '/Users/Erika/.cpan/prefs'
Running make for A/AD/ADAMK/YAML-0.71.tar.gz
CPAN: LWP::UserAgent loaded ok (v5.813)
CPAN: Time::HiRes loaded ok (v1.9711)
Fetching with LWP:
  ftp://cpan-du.viaverio.com/pub/CPAN/authors/id/A/AD/ADAMK/YAML-0.71.
+tar.gz
CPAN: Digest::SHA loaded ok (v5.45)
Fetching with LWP:
  ftp://cpan-du.viaverio.com/pub/CPAN/authors/id/A/AD/ADAMK/CHECKSUMS
CPAN: Compress::Zlib loaded ok (v2.008)
Checksum for /Users/Erika/.cpan/sources/authors/id/A/AD/ADAMK/YAML-0.7
+1.tar.gz ok
x YAML-0.71/
x YAML-0.71/Makefile.PL
x YAML-0.71/META.yml
x YAML-0.71/LICENSE
x YAML-0.71/README
x YAML-0.71/inc/
x YAML-0.71/inc/Test/
x YAML-0.71/inc/Test/Base/
x YAML-0.71/inc/Test/Base/Filter.pm
x YAML-0.71/inc/Test/More.pm
x YAML-0.71/inc/Test/Builder/
x YAML-0.71/inc/Test/Builder/Module.pm
x YAML-0.71/inc/Test/Builder.pm
x YAML-0.71/inc/Test/Base.pm
x YAML-0.71/inc/Module/
x YAML-0.71/inc/Module/Install.pm
x YAML-0.71/inc/Module/Install/
x YAML-0.71/inc/Module/Install/Can.pm
x YAML-0.71/inc/Module/Install/Fetch.pm
x YAML-0.71/inc/Module/Install/Win32.pm
x YAML-0.71/inc/Module/Install/WriteAll.pm
x YAML-0.71/inc/Module/Install/Metadata.pm
x YAML-0.71/inc/Module/Install/Base.pm
x YAML-0.71/inc/Module/Install/TestBase.pm
x YAML-0.71/inc/Module/Install/Makefile.pm
x YAML-0.71/inc/Module/Install/Include.pm
x YAML-0.71/inc/Spiffy.pm
x YAML-0.71/MANIFEST
x YAML-0.71/Changes
x YAML-0.71/t/
x YAML-0.71/t/export.t
x YAML-0.71/t/dump-code.t
x YAML-0.71/t/load-spec.t
x YAML-0.71/t/node-info.t
x YAML-0.71/t/dump-perl-types.t
x YAML-0.71/t/marshall.t
x YAML-0.71/t/dump-tests.t
x YAML-0.71/t/dump-blessed.t
x YAML-0.71/t/TestYAML.pm
x YAML-0.71/t/freeze-thaw.t
x YAML-0.71/t/bugs-emailed.t
x YAML-0.71/t/regexp.t
x YAML-0.71/t/98_pod.t
x YAML-0.71/t/load-works.t
x YAML-0.71/t/99_pmv.t
x YAML-0.71/t/basic-tests.t
x YAML-0.71/t/references.t
x YAML-0.71/t/inbox.t
x YAML-0.71/t/load-tests.t
x YAML-0.71/t/dump-file-utf8.t
x YAML-0.71/t/changes.t
x YAML-0.71/t/dump-file.t
x YAML-0.71/t/global-api.t
x YAML-0.71/t/test.t
x YAML-0.71/t/svk-config.yaml
x YAML-0.71/t/bugs-rt.t
x YAML-0.71/t/errors.t
x YAML-0.71/t/dump-basics.t
x YAML-0.71/t/2-scalars.t
x YAML-0.71/t/97_meta.t
x YAML-0.71/t/Base.pm
x YAML-0.71/t/long-quoted-value.yaml
x YAML-0.71/t/dump-works.t
x YAML-0.71/t/svk.t
x YAML-0.71/t/dump-stringify.t
x YAML-0.71/t/dump-nested.t
x YAML-0.71/t/load-fails.t
x YAML-0.71/t/load-passes.t
x YAML-0.71/t/pugs-objects.t
x YAML-0.71/t/dump-opts.t
x YAML-0.71/t/load-slides.t
x YAML-0.71/lib/
x YAML-0.71/lib/YAML.pm
x YAML-0.71/lib/YAML/
x YAML-0.71/lib/YAML/Dumper.pm
x YAML-0.71/lib/YAML/Any.pm
x YAML-0.71/lib/YAML/Base.pm
x YAML-0.71/lib/YAML/Dumper/
x YAML-0.71/lib/YAML/Dumper/Base.pm
x YAML-0.71/lib/YAML/Node.pm
x YAML-0.71/lib/YAML/Tag.pm
x YAML-0.71/lib/YAML/Loader/
x YAML-0.71/lib/YAML/Loader/Base.pm
x YAML-0.71/lib/YAML/Error.pm
x YAML-0.71/lib/YAML/Marshall.pm
x YAML-0.71/lib/YAML/Types.pm
x YAML-0.71/lib/YAML/Loader.pm
x YAML-0.71/lib/Test/
x YAML-0.71/lib/Test/YAML.pm
CPAN: File::Temp loaded ok (v0.18)
Warning (usually harmless): 'YAML' not installed, will not store persi
+stent state

  CPAN.pm: Going to build A/AD/ADAMK/YAML-0.71.tar.gz

Checking if your kit is complete...
Looks good
Writing Makefile for YAML
Could not read '/Users/Erika/.cpan/build/YAML-0.71-pZsez6/META.yml'. F
+alling back to other methods to determine prerequisites
  ADAMK/YAML-0.71.tar.gz
  make -- NOT OK
Warning (usually harmless): 'YAML' not installed, will not store persi
+stent state
Running make test
  Can't test without successful make
Running make install
  Make had returned bad status, install seems impossible

[download]

Why does make return as "bad status" and does this mean that YAML is installed? I tried doing  $cpan WWW::Mechanize but this failed to install again

In reply to Re^8: WWW::mechanize install by Anonymous Monk
in thread WWW::mechanize install by Anonymous Monk

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