Thank's Dave for attention.....
Thanks for the suggestion for this specific case, but I’m still getting the warning 'No pixels were selected'. Even in the specific case like: 'Assuming you want the garage door and want to exclude the windows, set path operations to exclude overlapping shapes, then draw around the door and then the windows', the result of the selection is that it only selects the windows...
To sum up: sometimes I get the error message, and other times—after several attempts—the selection is simply incorrect.
What could be the cause? Where am I going wrong? I’ve been using Photoshop since CS3 and this has never happened before....
With intersect path operations, the selection will be made only where all the subpaths intersect - which is nowhere in your example.
Assuming you want the garage door and want to exclude the windows, set path operations to exclude overlapping shapes then draw around the door then the windows.
Dave
By @davescm
"Okay, thanks for the suggestion for this specific case, but I’m still getting the warning 'No pixels were selected'. Even in the specific case like: 'Assuming you want the garage door and want to exclude the windows, set path operations to exclude overlapping shapes, then draw around the door and then the windows', the result of the selection is that it only selects the windows...
To sum up: sometimes I get the error message, and other times—after several attempts—the selection is simply incorrect.
What could be the cause? Where am I going wrong? I’ve been using Photoshop since CS3 and this has never happened before. Could I need to reinstall it?"
You could try resetting the tool, but it sounds like the path operations were set incorrectly. When you look at the paths panel (you can make the thumbnails bigger so you can see them) if you don't see any white then no pixels will be selected when you try and turn it into a selection. In a correctly set path, the white areas will be turned into a selection the grey areas will not.
To reset the tool go click on the down arrow next to the pen tool icon in options bar, then click on the cog wheel and in the menu choose reset tool.
Dave