I usually rightclick a picture in Lr CC2015 and edit it in Ps CC, then I save my edition (Ctrl + S) and close the file. When I return to Lr, the main window remains gray with the legend "No picture selected". The film strip shows the original dng file but not the edited one. I close Lr and start it again and the picture is there in the film strip.
I've not checked "stack with original" checkbox in Preferences
Is there anything I can do to solve this issue?
Adobe has released a new version of Photoshop CC today and you may wish to install it to see if it helps with your issue. Quit Lightroom and don’t re-launch Lightroom until the new version of Photoshop is installed. LR should then automatically recognize the latest version of Photoshop on next launch. See my blog for further information on Photoshop CC 2015.5
Well actually, the issue is not resolved since I've had the same thing happen with other plugins, mostly Silver FX and MacPhun's Intensify. The plugin appears to save the image but when you return to Lightroom, there's a grey window with No Picture Selected and the version of the picture I've been working on has not been saved anywhere I can see.