I found this problem when working with Nebula Set-ups, but looks like it has nothing to do with it. Part of the programs don't show up in Nebula although they are in the Programs and Vectors Files. This disappering happened probably when I upgraded to 1.3.460 or when I did some rearranging of the categories in NAT. At least TMV category seems to have vanished. Obviously there is more of them but it's pretty hard job to go through all 800+ programs.