Again, thanks for all the help.
I've made some progress that I thought I should share with the form.
AS you can see from my previous posts, every time I attempt to master I receive a message stating that "UOP has motion control" or "SOP has motion control" depending on the position of the REMOTE key. This was preventing me form completing the mastering process.
Well, I finally received my "Karel Reference Manual Version 2.0P" yesterday I purchased used. Within the manual I've read about the "REMOTE_MASTER" built-in function. This function has an integer value that controls what device has assigned motion control. The manual states that when the REMOTE key switch on the operator panel is off a zero is returned and no remote device has motion control. But, by using the set parameter command you can change this value to one of the following integer values: 1 = UOP (user operator panel), 2 = CRT/KB (cathode ray tube/keyboard), 3 = NCP (network), 4 = NOOP (no operator device).
I then changed the parameter value to a 2 so that the CRT/KB would have motion control. After making that change I went through the mastering process again. This time it completed the process without returning the now annoying message of UDP or SOP has motion control. The error at the upper left hand corner of the screen saying "3038 Mastering no done" also went away. It looks like I have finally completed that mastering process. The robot now seems to respond better and seems to have full range of motion. Lets see if I can now program it to do what I need for it to do. Now the real fun starts!
Thanks again to the forum for all it's help and continued help.