Thank you for the log. Your device runs out of memory!! Are you using knox / device encryption? I see an encryption process grabbing a file and encrypting it, which is clearly contra-productive in terms of memory problems If you are using device encryption please try to disable it and re-rung the tests!Installed your latest June 20th 2k version on my Note 4 (Marshmallow).
When I save a video from the Gear 360 to my device, it crashes at 100% and nothing shows up in My Device tab after app restart.
However, if I browse to DCIM/Gear 360/ in file manager, I see the newly stitched video there. Now if I 'open with' and select Samsung Gear 360 Manager app, it opens and plays the 360 video in all its glory.
And then after a little while, when I reopen the app, it finally shows it there in the My Device tab.
There was one instance where in file manager, the final stitched video was appended with ".MP4.TEMP". I removed the .TEMP and "open with: Samsung Gear 360 Manager" and it worked.