Ctrl+Alt+Z

[New_personality_05]

Using photoshop, I found this shortcut really helpful, especially when I just started learning layer masks. Then all of a sudden it stops working! I can't do this action anymore unless I go to Edit\Step Backward. Please help me start using this shortcut again...

 

[New_personality_05]

Nevermind, it was my mistake. I had a program open that used the shortcut Alt+Z. I'll remember to keep that in mind next time!

 

[Yutosi]

Just keep in mind that the step backward is going backing history states, which are determined by the number of history states defined for history (from Edit / Preferences/ General). To see this check the history palette.

Ammar