> So I guess the command or counter or whatever in \installprogram is > expanded at runtime. > I tried \expanded, but it didn't help.
You have to run \installprogram{} on each separate, expanded
commandline.
I thought that was what I do. \installcommand is run after every buffer. I also tried \expanded{\installcommand{\LP}} and \installcommand{\expanded{\LP}}, but neither did help.