It says su binary needs to be updated although nothing is updated. The root is verified. Even titanium backup is not working properly.
not rooted properly...
root links..
Samsung Galaxy S4 root | Samsung Galaxy S 4 i9500, i9505, i9505G, i9506 | XDA Forums
Other Stuffs:
0. [HOW-TO] The ULTIMATE All-In-One Guide - I33… | AT&T, Canadian Bell, Rogers, Telus, Virgin Samsung Galaxy S 4 | XDA Forums
1. [GUIDE] Unroot/Unbrick, Flash official stock… | Samsung Galaxy S 4 i9500, i9505, i9505G, i9506 | XDA Forums
2. Frequently Asked Questions | Samsung Galaxy S 4 i9500, i9505, i9505G, i9506 | XDA Forums
3. [HELP THREAD] Galaxy S4 | Ask any question… | Samsung Galaxy S 4 i9500, i9505, i9505G, i9506 | XDA Forums
4. *forum.xda-developers.com/galaxy-s4