Toggle Track view ("Opt"+"-") doesn't work

[LukeFromBerlin]

I am still on PT8, but I hope this is the right forum for my problem...

PT Manual (and the DUC) says pressing "Option" and "-" toggles Track view between waveform and volume view (for all tracks)

Somehow this does not work for me, although I WISH I could use this function. I tried everything for hours.

When I press "-" by itself ....the activated region nudges.

When I press "Option" and "-" ... I get this bizarre error message:
"No Automation could be written because automation recording/playback is disabled for each of the individual controls and/or automation recording is disabled in the automation enable window"

I dont WANT to record any automation, I want to toggle the track view


The Shortcuts PDF says this works on "QWERTY" Keyboards only. I have a german keyboard, so it's "QWERTZ" (Y and Z positions are exchanged) ...but that can't be the reason, can it ?

Tried all variations of "Command" and "-", "Option" and "Shift -" etc etc. No chance.

Any clues or thoughts ?

THANX !!