I made a terrible mistake, I think. I didn't read the information about upgrading Joomla 2.5 to 3.4 and CB 1.9 to 2.0. I did the Joomla upgrade first. Then I was going to upgrade CB 1.9 to 2.0. I couldn't find any way to upgrade the existing installation, so I tried to simply install CB 2.0. All I got was a full page of error messages on a plain white screen.
Is there any way to fix this mess other than start over with my backup of my J2.5 site and upgrade CB first?
Thanks for any help.