After a discussion with our developers I found out that there might be already a fix for this issue however we haven't released it yet (it will go out in the next version).
In case you don't want to wait for the new version to come out, there might be a solution for you even now.
The whole issue is because there is a wrong registry on the PC, so as a quick fix you could import the attached registry:
https://drive.google.com/open?id=1KWisLahAbvH_6F0vE75VHCPtzZXilTpn.
Just download the .reg file and import it by right-clicking it (it will require administrator access rights). It should then work, if not, try to restart the PC and then open Cleanup Disk Doctor to check it once more.
It is still possible that it might be a different issue, in that case we would still need the log files, as I wrote above.
Thank you and have nice day.