CLM 4.0.5 and DOORS 9.5.1.0 existing systems configuration issue

This should be one of the most used configurations, but I am hitting a weird problem.

I have set up my DOORS ERS repository and the RTC workspace with OAuth consumer keys and secrets, and added them as respective friends.  In RTC, I can add the DOORS ERS repository, or any specific project/module to the list of Associations in the project area just fine.  When I go to DOORS, login as Administrator, and try to add Remote Services Collaboration links for the registered RTC server, I get a login page for /Jazz, and a white window with the title OAuth-DOORS.  When I put my credentials in, the login page disappears, the process just hangs, leaving the blank window up, and no further action.  This is where I should be able to navigate to the project workspace to complete the collaboration links definition.

Did I hit a perfect storm of versions with a known issue, or did I leave out a step?  Nothing like 5000 different articles all trying to convey the same steps for configuration, but with varying versions and approaches......

My head hurts.