Funny, the Creator Update problem happened to me too, which said I could download the 10586 SDK, which I did and worked for me as for the actual build of the Editor/Engine.
Secondly, I am also following the same trajectory as you, specifically, I created the UEUWPFlying Starter Kit, which may be too big (since built in all its glory is roughly over 962MB). With that said here are a few settings I made within the Editor:
*** Project Settings ***
Company Name: RvBGames
Company Distinguished Name: CN=RvBGames
Copyright Notice: Copyright (c) 2017 RvBGames
Project Displayed Title: UEUWPFlying
*** Platforms (UWP) ***
Signing Certificate: <<see below>>
Logo: <<screenshot of static mesh saved as PNG in MSPaint, 512x388>>
Small Logo: <<copy of logo, resized to 291x226, again a PNG>>
Wide Logo: <<copy of logo, resized to 514x194, again PNG>>
Splash Screen: <<same one as logo>>
Store Logo: <<same as small logo>>
Tile Background Color: 128, 128, 0
Splash Screen Background Color: 0, 128, 128
*** Signing Certificate (placed in BAT file) ***
“C:\Program Files (x86)\Windows Kits\10\bin\x64\makecert” UEUWPFlying.cer -r -n “CN=RvBGames” -$ individual -sv UEUWPFlying.pvk -pe -cy end
“C:\Program Files (x86)\Windows Kits\10\bin\x64\pvk2pfx” -pvk UEUWPFlying.pvk -spc UEUWPFlying.cer -pfx UEUWPFlying.pfx
pause
So, for the logos the unconventional sizes may bite me later but I was hoping the tools would resize them as needed. But the Shipping build did work.
And of course, for the certifications you need to modify it to your liking.
At the moment, I’m trying to deploy to my Xbox One 