SI = Stealth Injection
No I just googled what it was when I saw the post, don't know anything about tho.
On windows if the official RS client is ran as admin mirror mode doesn't hook into it. Just tested it again(Didn't hook).
And just because something will open doesn't mean some of the hooks/files aren't cut off access. (Example being a CS cheat I know will load and inject fine till you realize some of the features aren't working right because of firewall and not being ran as admin.)
Sorry nothing helped good luck.