[Q] Unable to root after 4.3

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http://forum.xda-developers.com – My device was fine and rooted until 4.3 dropped and just like when 4.2 dropped I lost root access. I downloaded the Nexus Root Toolkit and ran through the Root process. There were a couple of times where the on screen messages weren't going forward such as push files to device, etc. but when I rebooted the device it seemed to be ok and it went into TWRP. After it went into TWRP it said Rooting but nothing happened. I hit reboot, system, then it asked if I wanted to root. I swiped for yes. I rebooted my device and started Super SU. It says my device isn't rooted. Can anyone assist m (HowTos)