Some folders not open in Opus

Dear Developers,
I'm using version 12.6. Recently I updated my Win 10 can run some "powerful" register cleaning software (CCleaner). After that, some of the folders will not open in Directory Opus.
These case will sometimes happen when there is a button in some software. For example, in a video editor there is a button called "Open output folder", then the output folder is opened in Windows Explorer rather than DOpus.
I saw some previous questions about registry editing but didn't work. I made a txt file using the FileTypeDiag tool. Can you help me see which value is wrong?
Folders.txt (429.8 KB)
Thanks a lot!

Some software explicitly runs Explorer.exe when opening folders, instead of using the default file manager. If the problem with the software did not start after running CCleaner then the issue may be how the folder is opened and not the registry settings, and you may need to ask the software authors to change how they open folders, unless they have a reason for only using Explorer.

(In general, if they use ShellExecute on the folders, they just need to use a null verb and it will trigger the default file manager. Using "open" as the verb may do the wrong thing.)

If the problem only started after running the registry breaker ("cleaner" seems like a misnomer :)), and the same programs used to open folders in Opus but no longer do, then you may need to repair the registry settings. To do that, turn off Explorer Replacement via Preferences / Launching Opus, then click OK and wait 15 seconds. Then, turn it back on again.