I just found something in the song you sent me.
It seems that not only did you create a new MIDI instrument in the environment page by clicking on Instrument>New, but you also created an instrument in the Arrange page on its own channel strip! When I MOVED the MIDI object to the New Instrument channel Strip, all of the cabled faders fired.
So the next questions are:
Should this new instrument channel strip in the Arrange page appear automatically? (It doesn't in mine).
Should it be done manually? If so, how? (I tried to replicate this but without result).
Please note that this development, and the fact that the MIDI object must be moved to a new location are not in the tutorial.
Anyway, a little light at least.
Sadly (on another note) in your song, the highlighted channel strip in the Arrange page does not highlight in the mixer even though the 'link' icon is highlighted. (I thought it DID before. Am I losing it?!!!!)
Also, in your song, COPIED series cabled faders won't fire but TRANSFERRED ones will.
Are things getting better? I'm not sure.
Ah well, it gives me the very minutest hint of pleasure that I'm not the only one suffering. Thanks for sharing this pain ~:-D