Hi, Scott.
Please note we currently have an issue with CORS filter which will interfere with implicit flow use by on-page (javascript etc) clients. You can try to check for CORS-related errors in Google Chrome's development console to confirm you are facing it. If you will share the capture I asked before I also will be able to say whether it's the case by looking at it.
There are certain ways to circumvent it, or you could wait for a fix which should be there in next couple of days.