Sanjib’s solution worked for me and in my case I had recently installed version 10.5 and I had version 9.8 from awhile ago. What you will have to do though is back up the old one by renaming it so that it creates a new one, it will prompt you for recovery questions and answers as well.
I kept the old one around just in case, you don’t really have to if you don’t want to but I did it for safety reasons.
Thank you for posting your answer Sanjib, I would not have figured this out on my own.
One would have “thought” that Software AG would have put the files in the workspace area which I did create separate workspaces for so that I wouldn’t end up with issues like this. I ran into a very similar issue with Enterprise Manager for UM as well, there is a KB article for that issue as well to keep your realm config’s separate as - “surprise!”, it uses the exact same filename in the exact same place! I think I will mention this in the Brainstorm area for having the installer detect an already existing installation and say “do you want to re-use what you have or create a separate new space”.