This is not just an annoyance - it is a show stopper. When trying to use "Merge to HDR Pro" from Lightroom, it aborts in Photoshop with "Camera Raw Filter is not available" after "Open anyway" was chosen in Lightroom. The same happens when "Camera Raw Filter" is chosen from the filter menu in Photoshop. Photoshop shows Camera Raw is 18.104.22.1689 so that's the latest but there's obviously a bug where this is not being recognised as the latest. How do I revert to the previous version of Lightroom and Camera Raw because the use of the Camera Raw filter is part of my normal workflow many times a day.Note: This conversation was created from a reply on: Lightroom Edit in Photoshop warning message since update.