I have one recurring problem with Lightroom and Photoshop.
The situation: I have my lightroom library saved on an external drive. On that drive I save a complete carbon copy backup of my Mac.
Problem: When I want to edit a picture from my Lightroom library with photoshop I right-click on the image, select edit in and then select Photoshop CC 2015. Then the image is opened with Photoshop but not with Photoshop saved on my Mac's internal hard drive but the copy on the backup drive. Then I get the error message that the application has been moved etc. How can I force Lightroom to edit the image in my primary Photoshop directory and not in the backup copy of it?