Here is an annoying error that I came across and millions of other people have also come across. You will see this error after you thought you rooted your device and often it comes from Chainfire CF Autoroot method. I will tell you another root method that works well and won’t cause this Superuser Fc’ing.
1. Download the Philz CWM Mod MD5 to flash through Odin for whatever device you are running. In my case it was the T-Mobile Note 2 “T0lte” so make sure you get the specific one for your device. You can Google for it.
2. Download Odin itself. I used version 3.07. As usual make sure that only reset time and autoreboot are the only ones checked. “Don’t click on repartition or your screwed”.
3. Go to Chainfires download page for the CWM Superuser to be flashed inside CWM. Do this from your phone itself to make it easier to browse for it in Philz CWM recovery mode later on.
4. After you have flashed the Philz CWM and reboot into recovery mode. Just browse for your CWMSU v0.96 that you downloaded it. You can find it in download folder on your device. Flash that and once you reboot you will never see that horrible error again and you will have root indeed.