W10 (10586) - Why won't my store app open?

[besweeet]

W10 (10586) - Store App Won't Open

I was having issues with apps from the Store acquiring their licenses. I tried the post at http://answers.microsoft.com/en-us/...1/2c674ad2-5ab3-46f5-aa0a-6e4d1d9c1550?page=1 by Ramesh.Kumar that said to run this in an elevated Command Prompt window:

PowerShell -ExecutionPolicy Unrestricted -Command "& {$manifest = (Get-AppxPackage Microsoft.WindowsStore).InstallLocation + '\AppxManifest.xml' ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}"

After running that, the "Store" app in the start menu is now the following:

Opening it shows the following window before it disappears after a second or two:

Any ideas on how to fix this (without reinstalling Windows)?