Strong surface winds on Sunday morning prevented us from doing the compatibility test (a dry run of operating the entire payload under flight-like conditions, including radio commanding and radio data transfer) this past Sunday. We are now scheduled to run the test tomorrow (Tuesday 9/6) starting at 5 am because surface winds are expected for 8 am. It looks likely that the 125,000 feet winds will remain strong until Friday 9/9, and the first launch opportunity for a long (>16 hour) flight seems to be Saturday 9/10.
Fingers crossed