gzip: /Users/markwellons/Library/Application: not in gzip format
gzip: Support/.cpan/sources/authors/01mailrc.txt.gz: No such file or d
Something is failing to escape spaces in filenames. To debug this, try installing the modules in Bundle::CPAN one by one.
EDIT: Alternatively, look at o conf and change your setting of (at least) cpan_home to something without spaces. You should probably report this as a bug, but in general, to avoid problems with UNIX software, don't put spaces in your filenames.