I have been editing pictures in Lightroom CC (2015), when suddenly the option to use Photoshop CC as external editor disappeared. Basically when I right-click on "Edit in" command, the Photoshop option is grayed out. I went to preferences and can clearly see that Photoshop is still a default external editor. I tried to set Photoshop as second external editor, but cannot find Photoshop exe file. Could you please help me? I am running Windows 10. Thank you
check your c:/programs/adobe/adobe photoshop cc 2015 directory for a photoshop.exe file.
(unless you have a 32bit computer.)