LR has "lost" photoshop

[caddy]

Control-e no longer works in LR.  When I look in preferences, it the top says "Edit in Adobe Photoshop (not found).

Unlike the Additional External Editor, there is no Choose button for the primary editor.  Anyone know how I can tell where LR to find the PS executable?

[CatOne]

Control-e no longer works in LR.  When I look in preferences, it the top says "Edit in Adobe Photoshop (not found).

Unlike the Additional External Editor, there is no Choose button for the primary editor.  Anyone know how I can tell where LR to find the PS executable?
[a href=\"index.php?act=findpost&pid=150141\"][{POST_SNAPBACK}][/a]

Platform?  If this is the Mac you could try rebuilding the launch services database.

If it's Windows maybe you need to re-install the OS and all applications to try and fix that abortion known as a registry  

[sylvan]

Edit in Photoshop command is missing