A corrupted preferences file. Solution:
Official direct downloads for specific legacy versions are often moved to Adobe's archive or replaced by the latest Camera Raw plug-in installer . camera raw 9.12.1 download
Adobe Camera Raw 9.12.1 Download Guide: Supporting Your Older Gear A corrupted preferences file
Adobe hides legacy installers, but the direct download URLs still work. Copy and paste the appropriate link into your browser: camera raw 9.12.1 download