I am getting the following warning while installing any plugin in my rails application.
/usr/local/lib/ruby/gems/1.9.1/gems/activesupport-2.3.5/lib/active_suppor
Ruby (on all Unixes, including Cygwin) warns if you try to run an external program and your $PATH contains a world-writable directory. It doesn't just check the directories on $PATH: it checks each of their parents, too, because if /usr/local (say) is world-writeable, /usr/local/bin is subverted as easily as if it were writeable itself.
A work-around could be to remove "other" write permission from the relevant directories.
For instance:
This is due to the fact that /usr/local/bin is writable by your application when maybe it shouldn't. You can fix this by changing the permissions on this directory.