I have tried to download data logs for the most recent flight, and it hesitates when doing this taking longer than usual. When returning the thumbdrive to my computer, it indicates that the drive is corrupted and I have to do a disk file system fix. This has happened to two thumb drives now. I have just upgraded to version 16 on the Skyview. Could there be a problem with this new system. Also having problems with my transponder out that I never had before...maybe that is also due to v. 16??