I'm having a bit of a problem with installing ruby on rails using gem
on Windows XP. after
gem install rails --include-dependencies
it say as follows
Bulk updating Gem source index for: http://gems.rubyforge.org
ERROR: While executing gem ... (Gem::InstallError)
invalid gem format for c:/ruby/lib/ruby/gems/1.8/cache/
Any idea what I'm doing wrong here?