Hi DavidI had this same problem and found that there were double entries in the aircraft panel cfg it will look something like this////<VoxATCWindow08=VoxATCWindow09=VoxATC Recent Comms////>VoxATC////<VoxATCWindow10=VoxATCWindow11=VoxATC Recent Comms////>VoxATCDelete the ones i have hilighted in bold and then scroll down and delete all window 10 and 11Regards Dennis