I can't update iTunes

[digitalove]

Hi there,

I'm running the latest OS X. For some reasons I can't update iTunes, I click update on the Mac App Store and it starts downloading but at some point it stop without any error, and it still tells me to update.

This is a weird issue..

https://www.dropbo*****m/s/m7ner6on8omhxxo/Screenshot 2014-12-12 00.06.33.png?dl=0

Any ideas?