I apologize for beating the dead horse, but it does seem unusual that the only radio I have a problem programming through Parallels on my Macs are the 436 and 536. I have used my Uniden 396T, my Pro 197, my Icom ID31 and ID51, my Alinco G29T, my Yaesu VX6, my Yaesu FT817, my Motorola MTS2000 and XTS3000(Motorola, the most finicky radios in creation). Why is there a problem with the 436/536? Paul, seriously...someone in the software and firmware department really needs to figure this out. Thanks!