Lightroom CC 2015.8 Edit in Photoshop CC 2017 Not Working Together

Lightroom Version Number: 
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Im having the same problem on Lightroom Classic CC (latest update 2018, MacOS) and just did something that "fixed" it.
I read on another post that the user linked the problem to files on an external drive, which is just as I work.
I copied the folder containing my ".lrcat" file from the external drive to the desktop, and then proceeded to double click the .lrcat file which opened it on LR. When I clicked over a the photo I was trying to edit previously LR told me it couldnt locate the file, and asked my if wanted to do it.

I then made another new folder on my desktop, named it "photo" and dragged the corresponding .rar file from the external drive in to it.

I went back LR, "located" the file on this new folder on my desktop and proceeded to the "Photo>Edit in" menu and found "Edit in Photoshop" enabled, which previously I found both greyed out and enabled in different occasions but didn't work regardless, but this time when I clicked it, it all worked as usual, opening the file on PS and saving the edited PS on my same LR collection.

Im doing this right now and this is as far as Ive gone, but im guessing Im going to try moving my "lrcat" folders and its corresponding ".rar" files folders from my external drive to the HD on my mac, and then back to the external drive, with a different name or something.

Let me know if this works or is of any help!
*Update* I did that only with the .lrcat folder and its all back to normal, no need to move all the .rar files.
I did all the bunch of stuff described above, but maybe just moving the .lrcat folder back and forth, after deleting the original on the external HD could fix it. It sounds like a file corruption issue.

I am having the same exact issue as the original complaint. I edit in photoshop and when I save, it goes to the original folder and not back into lightroom. It was working fine two days ago and yesterday, it just stopped working

Having just found this thread because I'm getting problems in Ligthroom CC 7.1 (latest on Mac as at 2017-12-31) with similar weird workflows... I've created an idea post...

https://feedback.photoshop.com/photoshop_family/topics/-edit-in-or-photo-merge-of-a-photo-should-res...

Great solution. Thanks Russell

Scott, 

Thanks for the detailed information. 

I just tested and I can successfully edit from a collections set:  The file returns to the same folder as the original but does not return to the same collection as the original. If memory serves this is by design. 

If you initiate edit from the Collection Set, the image does not retain any collection membership.
If you initiate edit from the Collection, the image does retain collection membership
If you initiate edit from the Folder, the image does not retain collection membership.

Does that jive with your experience?

Rikk, thanks for your reply and suggestions. I had already deleted and reinstalled both programs, which didn't fix the issue, but maybe I should try it again. Before I do that, I will say that after I sent the reply yesterday, I looked further in this forum and found a suggestion to clear out the preferences file from the app data roaming folder, which I did. That did not seem to fix the issue, so tried the next recommendation which was to start LR while holding down the shift and alt keys. That gives you a choice to reset preferences. After resetting, I looked for another folder to try, and when I processed a photo in PS, it actually came back to LR! So I thought that must be the fix.

But in testing a few other folders, what I actually see is that I cannot get the photo back from PS if it starts in a Collection Set. I am able to successfully send photos to PS and back if I use photos from Collections, but not Collection Sets. I can also successfully send photos from imported Library folders, that aren't even in a Collection.

Unfortunately, I can't tell you which step in my process may have fixed the function from the Library folders and from Collections, but maybe others can try the shift-alt way of restarting Lightroom and see if that helps. Just close LR, and restart it while holding those two keys. You then get the choice to reset it to factory preferences.

I also have a feeling that I was able to successfully send photos from Collection Sets before, but I can't prove it. Now that never works, and if that's a new issue, it occurred after my last update. If you never could do that, then I learned something useful at least.

Here's the Collection Set "UK 2012" and the subfolders which are the Collections, to be clear about what I'm talking about. 



Thanks.

I did follow the uninstall via CC app several times and did a fresh download/reinstall - still get the same error. 

Patricia, those instructions were addressed to Scott's situation. For your situation, I recommend the suggestion posted here and verified as working: https://forums.adobe.com/thread/2362366

I did exactly that 3 times and still the same result. The only version of PS that opens from LR now is the 2015.5 version.