Mountain Lion: Heroku update gives weird error message
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I looked and looked, but cannot find what's going on. I am having trouble with Heroku and the toolbelt in particular. So I wanted to try updating it and try to do 

$ heroku update

and I get

    Error:       undefined method `error' for Heroku::Updater:Module (NoMethodError)

Has anyone seen this and do you have an idea whats going on? Thanks!