Linda followed the steps. After a reboot, the error was gone. Her dark theme returned, now even smoother than before.
Download the latest installer from your Stardock Account rather than using an old installer file. Install and reboot again. windowblinds has detected a problem with core files
October 26, 2023 Subject: Technical Analysis and Resolution of WindowBlinds Core File Corruption To: User/System Administrators From: Technical Support Analysis Linda followed the steps