I just recently created some new Calc pids. Everything looks fine with them, basically I added a CALC.EOP (psi) using GM.EOPS (V) and the equation you provided.
I open my normal PID list, add those two parameters, GM.EOPS, and CALC.EOP to my list and save the PID selection list. I hit the monitor data button on my laptop and I got an error. The bug report is attached here.
Also, a few other related observations. If I closed hte Scan software, and reopened it, it did not save my newly selected parameters. I tried this several times. I re-added those two parameters, and resaved. Then I'd close the program and reopen. The parameters were not saving.
Another possibly related observation. In my calc_pids.txt file I have the description of CALC.EOP listed as "Engine Oil Pressure". However in the Scan software it shows the description of CALC.EOP as "Engine Oil Pressu" I have no idea why its cutting it short. There are several other descriptions that are longer.