(imported comment written by tigger0191)
Turns out I needed a “” after the “=” and before the rest of the path. Like this:
INSTALLDIR="{((parameter “drive” of action) & “:\Program Files\Symantec\Critical System Protection\Agent”)}"
I don’t understand it, but that’s what solved the problem.
Thanks for your help. I do appreciate it. I did use the parameter “drive” = “d” you sent. Simpler, less potential for error.