No, I am not able to get it working. I had other doubts:
a. The tutorial says that when I set my callback_uri, I should uncheck mobile frame and then put that uri in the Salesforce app, which I did. But, when I have to test my app in the mobile framework, I check that box and the uri changes whereas my callback uri is still the same. Could that be an issue?
b. I get the set of errors(that I posted above) only when I don't check Public and check Show in Mobile Frame (in Test). Whenever I check or uncheck both, I dont get those errors. Could you explain, why?