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I installed RVM and then the most recent version of Ruby with it. Now when I try to generate a new rails app I get the following error message.

 NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01. Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180@global/specifications/rake-0.8.7.gemspec:10. NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01. Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180/specifications/rake-0.8.7.gemspec:10. NOTE: Gem::Specification#default_executable= is deprecated with no replacement. It will be removed on or after 2011-10-01. Gem::Specification#default_executable= called from /Users/local/.rvm/gems/ruby-1.9.2-p180/specifications/rubygems-update-1.8.1.gemspec:11. /Library/Ruby/Site/1.8/rubygems/dependency.rb:247:in `to_specs': Could not find rails (>= 0) amongst [rake-0.8.7, rake-0.8.7, rubygems-update-1.8.1] (Gem::LoadError) from /Library/Ruby/Site/1.8/rubygems/dependency.rb:256:in `to_spec' from /Library/Ruby/Site /1.8/rubygems.rb:1182:in `gem' from /usr/bin/rails:18

Any idea on why this is happening?

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2 Answers 2

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Make sure you have the rails gem actually installed for your RVM installation:

gem install rails

Otherwise, it will default to run the version of Rails pre-installed on Snow Leopard (the /usr/bin/rails file)

All of the deprecation messages you're seeing are just warnings; the latest version of RubyGems deprecated a lot of stuff.

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I just wanted to add on to this...

I had the same problem. I tried installing rails several times. If someone else comes across this and should the above not work, it was a matter of giving the directory proper permissions. Details:

I'm running Rails on Mac OS 10.6.8. In my user directory I like to setup a Projects directory for my dev work. I was able to run rails just fine after chmod-ing the Projects directory to 777.

I hope this helps.

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