Invalid Gem Format

Sometimes when installing Ruby Gems, you run into errors. Yeah, I know, sounds crazy, but it happens. For instance, while installing the heroku gem using the following command:

sudo gem install heroku

I got back this error on the command line:

ERROR: Error installing heroku:
invalid gem format for /Library/Ruby/Gems/1.8/cache/rest-client-0.8.2.gem

While opening up the rest-client-0.8.2.gem file in TextMate, I discovered it was completely blank. After I deleted the bogus rest-client-0.8.2.gem file and tried again, both the heroku and dependent rest-client gems were installed properly. My guess as to why this happened is because I typed in the system password (i.e. sudo command) incorrectly on my first attempt at installing the gem. Silly me for using complex passwords.

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