I was using a last gen MacBook Pro and the latest released and patched version of OS X. Then I switched to a newer MBP and the same OS. This time, everything seemed to work perfectly yet Superuser app doesn't seem to do anything at all and Titanium backup informs me that I am not rooted. Guess I'm going to go with the manual approach. Frustrating.
You have to reboot after running this.
When did you download? There was a bug in one of the released yesterday but was fixed very quickly. Maybe you got one that had the bug.
If not. Then try running it again.