SuperSU has stopped working. Root Checker states device is not-rooted. If I un-install Chainfire SuperSu, then Root Checker states device is rooted and Titain Backup, Rom Mgr, etc.... all work again.
However, I don't like my root being wide open to any app. I'd prefer a su that sets permissions.
I see "su" in sustem/xbin, but no busybox.
Has anyone had this problem, or a suggestion?