It seems that Lightroom can not be opened Photoshop CC when use Edit In > 'Open photos as layers in Photoshop...' or ‘Merge to Panorama in Photoshop’ –operations. When the Photoshop has opened independently manually, 'Open photos as layers in Photoshop...' and ‘Merge to Panorama in Photoshop’ is working properly. I wonder that other operations eg. Edit In > ‘Edit In Adobe Photoshop CC 2015.5’, ‘Open as Smart Obcject in PS’ and ‘Merge to HDR Pro in PS’ worked ok. My Lightroom version: CC 2015.7, Photoshop ver. 2015.5.1 and operating system is Win 10.
Is this a bug or is it a feature of the LR program?
I wound the answer.
ACP, DdeGannes said on 25th Sep that ”--Its a know bug and Adobe is working on rectifying. The workaround for now is to open PS before beginning the process.” This case is closed. I look forward to repair.