OS X Mavericks won't install?

Hi, I am trying to install OS X Mavericks on my 2011 MacBook Air. The installation process seems to go smoothly until about 30 seconds or so into the actual installation itself. The installation log pops up, but there is no error message apart from "The OS X installation couldn't be completed." Is there any reason why this is happening? I have verified the disk and repaired permissions on Disk Utility, but nothing was wrong. My school has installed Esafe Prism on my mac but that shouldn't make any difference, should it? Thanks.