From: Hunt Jon Date: 2008-10-17T15:22:18+09:00 Subject: Re: Need help to install "linguistics" gem Solved. I opened up the directory "Linguistics-1.0.5.gem" and found two files "metadata.tar.gz" and "data.gz". I extracted both archives, and "cd"ed to "data" directory. There I ran a command. pwd #=> /Users/myusernamei/Desktop/Linguistics-1.0.5.gem/data sudo gem install Linguistics Now the installation was successful. Thanks for your help, guys.