My experience (core hooked up to SN10B and Oudie2, all with latest software) has been totally painless. Although I haven't declared a task in 13 years, my SN10 had no problem sending the R9 race tasks to the core on every flight last week at Moriarty. After each flight, using the Butterfly display and the same USB stick, it downloaded the latest flight in seconds, with positive feedback on the display of the status of the download. And Winscore doesn't care what else you have on your memory stick as long as the flight for the day is there.

I am EXTREMELY