Huotkis sorry to hear you're having trouble
not to be trivial or annoying, just trying to help as I have overlooked tiny details in various situations: but unless they changed the installation links... it has worked for me and many others, so make sure it's the right version for your maya (not sure what year you're running)
And i know it can be super annoying, but have you tried saving all your pref files and then reinstalling Maya?
Maybe even resetting prefs and trying then before attempting to reinstall Maya
Also if it appears to work until a certain point, I would double check to see if files have already been put in your Program Files directory and clear them before trying to reinstall Ziva
Again I don't know what your technical level is based off of your posts so if you've already tried these things then disregard ^^