I'm not sure if the dependency works on Mac to log into directly with OSBot. But you can either click the beta box in the loader or patch the Jagex launcher.
Stealth is injection and mirror is external. Biggest difference now a days is mostly resource usage and if you want a theoretically less likely to be detected for using a 3rd party client
Try asking the script creator, or in their discord for help. If you don't want to do that you'd need to at the very least say which script. I would assume if you check the logger though the script will say why it won't go do barrows
@iron88999 Very possible to be banned for doing this, I would assume unlikely though. But to know for sure Jagex stance on this you'd need to get a mod to comment on it. Try asking on twitter or Reddit
Open with Java. If double clicking the jar opens it with winrar or 7zip run jar fix then try opening it
https://johann.loefflmann.net/downloads/jarfix.exe