After trying it on several devices including going back to the AR2 software on raspberrry pi I think I have it resolved. If I only replace the IRbot.cal file it starts working again. So I very carefully changed the parameters one at a time, saved data, and reopened the app. If I add a decimal to the steps parameters it won't open. I made them all whole numbers and the problem seems to have gone away. I was pretty sure I saw in one of the videos Chris had fractional/decimal numbers there, but either way it seems to be working for now. I can adjust the angle instead of the steps to get it dialed in.

@Kstan Simit you understand correctly, but clearly this is not a solution right? Also I don’t know which file is the calibration data file. Which, as far as I can tell, is the only file I am changing. I haven’t tested if it continues to work/ open properly if I don’t change the calibration data. As a side note: the first time I open the program after extraction I get a warning that windows firewall has block the program from opening. i can override that and it works for one cycle as mentioned above. I tried turning off windows firewall but that did not fix the problem. However it might be a clue. There are no firewall warnings on subsequent openings.