Please read through the readme.txt and make sure you haven't missed a step in the installation/upgrade process. For example, did you create the required menu link to the CB profile?
Would having a menu link to the profile affect the registration page? But yeah, I just went in and edited the old profile link in the menu to make sure it was properly directed (it's the same link as 1.1).
And just to confirm, I also did uninstall the old cblogin module and install the new one.
I also did all of the checks in the CB tools manager. There was one with user field with an issue but it said that it fixed it.
And I have unpublished all third party CB plugins for now.