enlarging ID bore using mazatrol

[constitutionlvr]

I am a student learning CNC. I have just started to learn the conversational Mazatrol system. Most things I have practiced with have been fairly straight forward. What I am wanting to learn how to do is enlarge a pre-drilled bore, with a boring bar. For example purposes, I have a 1.5 inch OD stock. I have pre-bored a with a .375" tool. My boring bar has a diameter of .25. I would like to enlarge the ID to 1". How do I go about this? I know Ideally I would use bits or end mills to get closer to the actual ID but this is a lesson in principle/ training. My current thought and trial process has been using Bar-in-2 and trying to use x starting point of zero or .125 (1/2 cutter) and a finish point of of 1." I have tried several different combos and several different processes. My shape check has come out fine but when I have tried tool path check I get an error. Depending on what I have altered I have received different errors. All error codes have been above 805 and below 820. I am not positive of exact number and error but 816 and illegal cutting point are strong in my mind. Please forgive my lack of clarity but I kept changing info and getting different errors and have lost track of the most frequent and I do not have the book in front of me to reference the errors I received. Any help or direction you could offer would be appreciated.
I should be back on the machine on Tuesday. I will take notes and give a try and give a better description. I may be way off track. If so please help guide me on the direction to go. Mazatrol seams simple and straight forward. What am I missing?

[fordav11]

if you drilled a hole 0.375 your start point in X is 0.375 not 0
Here is the program. It will bore from 0.375" to 1.0" by 1.0" deep taking 0.01" cuts.
This turning operation is very simple. If you don't understand this you really need to
read a Mazatrol Programming manual or buy one on ebay.

PNo. MAT   OD-MAX  ID-MIN  LENGTH   RPM   FIN-X  FIN-Z  WORK FACE MPX FIN-LENGTH
  0  S45C  1.5     0.375   2.0      500   0.02   0.005  0.        *     *

PNo. MODE   #  CPT-X  CPT-Z             RV    FV  R-FEED R-DEP.  R-TOOL F-TOOL
  1  BAR IN 0  0.375  0.1               300   400 0.01   0.01       7      7
SEQ SHP S-CNR    SPT-X     SPT-Z     FPT-X     FPT-Z   F-CNR/$ RADIUS/ø   ROUGH
  1 LIN            *         *       1.0       1.0                 *      Rgh 4

PNo. MODE  COUNTER   RETURN  WK.No.  CONT.   NUM.     SHIFT
  2 END        0        0              0       0        0.