From: Luis Lavena <luislavena@...>
Date: 2009-12-06T07:50:06+09:00
Subject: Re: gems installation - invalid gem format

On Dec 4, 6:16 pm, Serguei Cambour <s.camb...@gmail.com> wrote:
> Aaron Patterson wrote:
> > On Sat, Dec 05, 2009 at 12:22:41AM +0900, Serguei Cambour wrote:
> >> ruby 1.8.7 (2009-06-12 patchlevel 174) [i486-linux]
> >> serge@serge-laptop:~$ gem -v
> >> 1.3.5
> >>  I always get the above error of '...invalid gem format..'. Any idea how
> >> to resolve that? Something goes wrong in rubygems
> >> commits/dependencies?Thank you.
>
> > Does this break with any other gem?  Or is it only the heroku gem?
>
> With any other gem, even when I tried from installing Ruby, then doing
> (On Windows or Ubuntu - it was the same):
>
> gem update --system
> Updating RubyGems
> Updating rubygems-update
> ERROR:  While executing gem ... (Gem::InstallError)
>     invalid gem format for
> C:/Ruby/lib/ruby/gems/1.8/cache/rubygems-update-1.3.5
> gem
>
> Installing fromlocal rubygems-update-1.3.5 didn't solve the problem.
> Only the error message changed. Instead of
>
>     invalid gem format for
> C:/Ruby/lib/ruby/gems/1.8/cache/rubygems-update-1.3.5
>
> I got
>
>     invalid gem format for C:/Ruby/lib/ruby/gems/1.8/cache/[gem_name]
>

Can you remove 1.8/cache folder and try again?

This time, please execute the install command using --debug -V
options, which will provide us enough information to see where the
problem is.

Thank you,
--
Luis Lavena