Hello bigzer,
I was unable to reproduce this issue with the information provided. I have a few questions that will help narrow down what issue it is that you are experiencing.
Quick questions:
- When you say that you used an “unmodified pre-compiled UE4.9”, do you mean that you used a completely clean project?
- If not, can you reproduce this issue in a clean project?
- Could you provide the full call stack from the crash that you received ( including machine id )?
- Could you provide a detailed list of steps to reproduce this issue on our end?