As far as I can see, there are two different errors here:

Does "/Users/chadflinn/Desktop/adapt_authoring/temp/adapt_framework/" exist? Somehow it doesn't seem to be able to access to that folder, could be permissions or similar (did you try to run node as root?)

And, has mongo user configuration been changed? It seems that your conf/conf.json has some database user misconfiguration 

That came over the top of my head.... not sure that will help you.