Attached is the file for the regulator. Just for fun I ran the temperature test. Not to bad I guess. I think most the temperature drift is due to R4 & R6 so it could be made better with 25ppm resistors.
I made a couple of changes. I'm still not real happy with the stability.
What are you making that you are looking for such tight tolerances?
Don't forget if you use a DAC like this design assumes each step will be about .3 volts.
The op amp and transistors are not in the standard spice library but for experiments you can replace them with any npn transistor and rail to rail op amps. (It will let you run things way out of spec.) If you are just getting started downloading and installing new models will make you unhappy with spice.