# hrisff on 24 Jun 06:02:
Anyone else getting this?
$ sudo gem install rails ERROR: Error installing rails: invalid gem format for /usr/local/lib/ruby/gems/1.8/cache/activesupport-2.1.0.gem
2.0.2 is installed and working. Using gem v1.2.0 on Leopard
deleting the cached gem and retrying doesn’t help. # pentor on 24 Jun 14:45:
Same problem here as chrisff also today… could it be a bug in that file or in the repository? # Vincenzo Acinapura on 24 Jun 15:08:
Same problem here, I’ve installed rubygems 1.2.0 and ruby 1.8.7-p22. When I try to install rails, I get “invalid gem format for /usr/local/ lib/ruby/gems/1.8/cache/activesupport-2.1.0.gem” # JoeTheIntern on 24 Jun 16:12:
Exact problem as chris, pentor and Vince – it was driving me crazy. Deleting the cache did not help – the gem magically reappears each time.
I managed to install ActiveSupport 2.1.0 by downloading from its rubyforge project page manually and installing locally, and then “gem install rails” goes through just fine. Looks like a bad repository version to me.
Was upgrading from Rails 1.2.3 on Vista, using RubyGems 1.2. # TomH on 24 Jun 19:21:
I used @JoeTheIntern’s instructions and was able to resolve the problem.
Download gem to a local file, then
sudo gem install—local activesupport-2.1.0.gem