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undefined method `[]’ for Enumerable

Getting a strange error like this:

undefined method `[]' for #

It comes from an incompatibility between rails 2.0.2 and ruby 1.8.7 as noted here: http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg528878.html

To fix it you can do one of three things:

1. Upgrade your app to rails 2.1.0 or greater
2. Downgrade your version of ruby to 1.8.6 (not suggested)
3. or place the following code in config/initializers/enurmerable_fix.rb
   unless '1.9'.respond_to?(:force_encoding)
String.class_eval do
begin
remove_method :chars
rescue NameError
# OK
end
end
end

Enjoy!