GLX application framework: application stacks and .dat files?

[Keith Clarke]

Hi folks,
I'm trying to configure a GLX application framework for my first 'proper' application but I'm struggling with getting my stack to be launched by the GLX launcher stack... 

I have copied my 'app.rev' stack file into the GLX application directory, successfully added it as a stack (a required, load on start-up, window type) and deleted the default program.dat stack reference. I have also updated the application stack script's kProgramStackName Constant to 'admin' (and I've also tried 'admin.rev'). This is the related GLX lesson http://revolution.screenstepslive.com/spaces/revolution/manuals/glxapp/lessons/6698-Incorporating-Your-Program-Stack-Into-the-Framework-Based-Application

But, if I open the launcher app in LiveCode, my stack doesn't get loaded or opened. Am I missing something obvious here? What are these GLX .dat stack files all about, anyway?
Best,
Keith..