I'm using a Mac system (OS10.11.6 with Lightroom CC's latest version. When I edit a photo using certain plug-ins (MacPhun's Intensify and Silver FX Pro 2) after saving the modified photo, and returning to Lightroom, I get a blank (grey screen) and a message saying 'No Picture Selected'. The version I've worked on with the plugin hasn't been saved.
Bow I've seen that people have had similar issues going from Lightroom to Photoshop. The upshot of this was that if you closed Lightroom and reopened it, the new version of the photo would be saved. That is NOT the case here. To all intentes and purposes, the works appears to be lost.
Has anyone else encountered such an issue? Is there a solution or a workaround anybody is aware of?
Please take a look at this article Image does not appear in Lightroom after clicking "SAVE" - Nik Collection Help and follow the steps mentioned. Let us know if that helps.
Also, make sure you have updated Lightroom to the latest version CC 2015.9