From: Eric Hodel <drbrain@...7.net>
Date: 2008-01-12T19:26:35+09:00
Subject: Re: Problem with installing gems via rubygems.

On Jan 8, 2008, at 03:04 AM, dizz wrote:

> Hey I am having a problem installing rails on my ubuntu machine. I
> cannot install any gems and keep on getting the following error.
>
> ERROR:  Error installing rails:
>        invalid gem format for /usr/lib/ruby/gems/1.8/cache/
> activerecord-2.0.2.gem
>
> I have tried updating rubygems, manually installing rubygems (not
> using synaptic) and still cannot get ruby gems to work.
>
> It would be great if anybody could give me a hand.

Try deleting that file.