The direct installation of the plugins apparently works well if you already have a large library of dependencies installed.

I tried your method Generalantilles.

Unfortunately, it ended up being a long discouraging process of installing dependency after dependency since often you need to install one or a group of them before you can install another and so on.

Hmm, ?!($#*&%)( oh well.

Edit: When I reflash back to Chinook I can then use the RTCOMM beta installer software to successfully install RTCOMM. But when I go back to Diablo, RTCOMM will not install for me.

Neil