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GitHub User: lporras
I just installed the Rails 3.1.0.rc5 version and I found that the line:
config.active_record.identify_map = true
on application.rb has been removed, this must be cause that intruction was not working at all
You can install any of these runtimes:
I recommend to install TheRubyRacer or Johnson because are easy to install, You can install them with gems.