I'm a newbie here (Hi n00b!).

I evidently don't understand the setup_win.bat

It fails, spectacularly.

Looking at the file, it's looking for files starting with internal\ladeedah.

But I'm already in internal to execute the batch file.

I guess I'm supposed to start the batch file by using internal\setup_win.bat in the upper\QB64 directory?

Well, that's working. The documentation might want to make that a bit clearer. Location seems to be everything. :p