"can't activate rails", "already activated rails", and "no such file to load -- breakpoint"

I’ve already asked about this on


but am bringing my troubles here as Jeremy K. requested today.

After upgrading my gem rails to the 2.0 preview release (1.2.4.7794
was the first one I got) I tried creating a new project and installing
the acts_as_attachment plugin. Then I ran rake test:plugins to make
sure everything is compatible before proceeding with my work and I got
errors like this:

rubygems.rb:246:in `activate’: can’t activate rails (= 1.2.4),
already activated rails-1.2.4.7794] (Gem::Exception)

A similar error occurs with acts_as_paranoid, though it complains
about one of the “active” gems rather than the rails gem itself.

Today I freshened my gems and installed 1.2.5.7919. I repeated the
steps above and got an equivalent error:
… can’t activate rails (= 1.2.5), already activated
rails-1.2.5.7919]

I’d already tried freezing rails in various ways and I’ve messed with
RAILS_GEM_VERSION, both without success.

Today I tried gem cleanup rails, which left me with just 1.2.5.7919
instead of the six or seven versions I had previously. I created a new
project etc., as above, and when I ran rake test\plugins this time it
failed slightly differently:

gem_original_require': no such file to load -- breakpoint (MissingSourceFile) from [...]/ruby/lib/ruby/site_ruby/1.8/rubygems/ custom_require.rb:27:inrequire’

Can anyone offer any help with this?

Thanks,

Sven

The same issue occurs with the tests for attachment_fu and the 2.0
preview release. It works fine with 1.2.5. I don’t know whether the
problem is rubygems not distinguishing between, say, 1.2.5 ans
1.2.5.7919, or whether there’s a problem with the plugins’
dependencies. Am I really the only person trying test:plugins against
the 2.0 preview release?

-Sven

Sven, I just ran into the same issue. For me, it was an rmagick
problem caused by an upgrade to my OS. I had to uninstall the gem and
reinstall it and then everything worked fine. That may not help you
specifically, but I thought it was worth noting that it didn’t have
anything to do with a plugin for me.

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