Fritz 20 Problem with Analysis

I used to use Fritz 16 for analysis. When doing so, you selected a reference database for openings and it would find novelties, plus put games into the analysis that were the more usual continuations. I found this quite valuable.

In Fritz 20 that option appears to still exist. You still can select a reference database. However when I actually do the analysis it never finds those novelties, and never adds in games as variations. In fact I doesn't appear that the opening reference checkmark does anything whatsoever, and I have tried with reference databases that do work in Fritz 16. I have also tried with the database 2025 that came with Fritz  20.

Does this actually work for anyone? Either positive or negative responses are useful to me.

If you did get it to work, what if anything did you do to get this working?

Thanks!

Update: I finally figured out how to get down to where I can submit a support ticket with Chessbase. We shall see if they are able to give me any insight into what is going wrong.

Problem solved. Update 5 of Fritz 20 broke this feature. If I deinstall the program and let it install version 4, then finding novelties and inserting the games works.

I then verified this was the problem by installing update 5 again. It broke.

I then deinstalled and reinstalled again to version 4 and it works again.

Note: It was not enough to revert back to the previous version. I actually had to deinstall the software.

I lost more time than I care to think about tracking this down. But I really wanted this capability.

Thanks for responding. You do still need the reference database to be keyed with the big key. I had done that, and it wasn't enough.

Your Fritz 6 goes back. I have a copy of Fritz 9 and I thought that was digging into deep history.