I'm trying to cut a rectangle pocket .687x.500.x.5358 deep. Using a .250 2 flute endmill. When I go to verify tool path it says ERROR-corner rad too large. I have changed tool radius, corner radius to the plus and minus but nothing seems to work. Am I doing something wrong and if so what?

I am confused about the wizard you are using. The ones built in to mach3 dont have many error messages, and no errors are raised on the verify button.
What corner radius are you using?

I was trying to use Newfangled wizard for rectangle pocket.

I just went out and got a couple screen shots for you to study and tell me what I've done wrong.

Try making the length of your pocket a positive number.

A positive number is not doable as I have a circle pocket at the X0 and Y0.

The length is a measured value, it must be a positive number. it is NOT a coordinate location. Your X and Y position values can be negative numbers as they are the coordinates of the corner. The corner is selected by the "select Position" button. It will move the green LED around the corners and the center.

The positive number did the trick on this . Thank you for your help.