app failing -- configuration issue?

Matt Cowley wrote:

Problem solved -- my code's written for 1.1.6 and gem install rails loaded up the new 1.2.1.

I'm guessing there's some work needed to upgrade -- for now I downgraded my rails install to 1.1.6 and the app runs fine.

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I to am having some issuse with upgrading from 1.1.6 to 1.2.1. I suspect that some of the files that rails creates initially are different?

Does anyone have a link detailing what must be done inside the app directory to upgrade?