I had to reboot the mac pro this morning. Before the reboot, Alt-4 worked on either of my dual display setup to go to the 4th desktop on either display (Desktop 4 on main display, Desktop 12 on secondary). Now it doesn’t work at all. All other Alt-n combinations work perfectly to go to the appropriate desktop.
I’ve looked in the TotalSpaces settings and Alt-4 is set as the shortcut for the 4th desktop on either display. I tried to reset it but Alt-4 is never seen when “recording”. There is no keyboard shortcut for Alt-4 that I can see in System Preferences.
I started taking down apps I thought might interfere and tried Alt-4 after I brought each down. Bringing down each of these made no difference:
text expander
better touch tool
pop clip
clamxav
I was really grasping at straws when thinking clamxav would have anything to do with it.
Then I stopped TotalSpaces and restarted it. All was back to normal. Alt-4 worked fine. Then I brought up the previously shutdown apps and Alt-4 still works fine.