This warning message appears everytime I use the marquee tool. The rectangular marquee tool also strangely has radius corners when I am able to make a selection at a certain size. The images in no way have been modified to my knowledge.
#1
Sounds as if you have the Feather setting cranked up. Try backing it off.
Art
#2
If you reset the Marquee tool, it will default the feathering back to zero.
I prefer to leave all the selection tools set to zero feathering and use the feather command (Ctrl+Alt+D) afterwards to set the feathering for the particular job in hand. that way you never need to worry about whether it has been reset to zero or not.
Chris.
#3
Feathering takes a lot of guesswork. I prefer to use Gaussian blur in Quick Mask Mode instead.
Just my 0.02 euros
Ronald
#4
Bear in mind that the warning is just telling you the "marching ants" will not be visible.
The selection is still there and can be used.
#5