At this stage we haven’t tested the new 1.1.0 SDK, so it’s possible there is some conflict with the embedded version in our UE4 plugin. If you are blocked by this I’d recommend rolling back to the previous until it has been investigated.
With UE 4.13.1 came changes that were causing the validation crash which is fixed in 1.08.14 and will be available shortly. The warnings about the Oculus plugin missing in the editor can be ignored as the plugin is not being loaded until runtime, this will be fixed in the future.