From: "Marc-andré Lafortune" Date: 2011-02-19T22:16:34+09:00 Subject: Re: Please help: uninitialized constant ActionView::Helpers::TagHelper::ERB (NameError) There's apparently a circular loading issue in Rails 3 (any helper loads ActionView::Helpers with loads all helpers). In this case, you probably don't need the two helper requires; just remove them: - require 'action_view/helpers/asset_tag_helper' - require 'action_view/helpers/tag_helper' Alternatively (e.g. if you run into problems and actually need to include them), you replace them with a single require: + require 'action_view/helpers' Note that this require will fail in Rails 2.x though. -- Posted via http://www.ruby-forum.com/.