I am having this exact same issue, I have filed a feedback report. The report id is FB16509825 This is a extremely high priority problem that needs to be addressed asap.

I have added details you requested to FB16509825 Please let me know if you need anything else.

Hello @DTS Engineer ? Are you there?? This is critical! It's stopping my app testing and being able to publish

@DTS Engineer - Still not working. Its been over two days now. This is significantly damaging progress for us.

@DTS Engineer - its now been over a week, this is significantly damaging our ability to develop our software. Please help! I know we're just a small shop, but your focus on this matter would mean the world to a group of dedicated Apple indie devs!