Ok I found some instability with this beta.
I previously had this error a few weeks ago but had updated my intel stick to the latest anniversary patch. I at the same time installed the latest SGP beta. I thought something went wrong with the windows update so I reinstalled windows and all apps from scratch.
I had 1 session since then and SGP worked fine.
Tonight I got the same crash! There's no trigger from what I see it just will randomly crash.
I will upload logs in the morning but its a hard crash. So much that it corrupts the sequence file when it happens. I remember this same corrupted problem when it happened the first time.
The error in the event log shows the same WindowsCodec.DLL crash. With a .NET runtime as well.
Anyway thanks for any info.