What version are you running? 2.0 RC2 What's the URL of the page containing the problem? First found at /admin/db/scmtools/repository/add/, but it's everywhere What steps will reproduce the problem? 1. Install a system with Review Board 2.0 RC2 2. Install pysvn and not subvertpy 3. Try to interact with Subversion What is the expected output? What do you see instead? I expect Review Board to work. Instead, I see "Authentication Failed" errors What operating system are you using? What browser? CentOS 6 Please provide any additional information below. I dug into the problem and found that the user name and password is not being passed to pysvn. Editing: /usr/lib/python2.6/site-packages/ReviewBoard-2.0rc2-py2.6.egg/reviewboard/scmtools/svn/__init__.py Around line 300, is the line: client = Client(config_dir, repopath) This creates a new PySVN client with no credentials. Changing it to: client = Client(config_dir, repopath, username, password) Solves the problem.