I took some video with my P4P today, set to H.265, 4K, 25fps, PAL, MOV container. Plays back somewhat stutteringly in Windows Movie Player. But, Adobe Premiere CC 2017 (on Win10) won't open the video file, saying no valid video streams.

I tried again with an MP4 container, and that imports fine into Premiere.

Anyone else found this? Sound like a glitch in the MOV implementation. I am guessing that Premiere is more fussy about file formats/ structure.

I will use MP4 for the time being...

If the file opens in quicktime then adobe has an issue. For PC's I use MP4 and for my apple devices mov. It is just a container for MPEG files. As you made the video in 4k the PC has to be fast enough to process the amount of data that the file contains. I use DaVinci Resolve to work wit my files.
Hope this helps.