I have been running version 6.03 for years with Windows Vista and XP. My spare laptop is Windows 10 and 6.03 will not load in it. I assume that is because 6.03 is very old. Can someone confirm that 6.03 will not run on Win 10? Cost of upgrade? Have never upgraded because it aint broke and I don't want to fix what aint broke. 73, Mike, WM5DX.