OS X Update 10.9.4 won't install on restart

In the App Store Updates window, it showed that my Mac had an update available for OS X Update 10.9.4. When I clicked on update and then restarted the computer as prompted to complete installation, I got a message that the update download was corrupted and needed to be re-downloaded. The mac restarted after the message and I am still running 10.9.3 per the "About this Mac" window without any major issues noted.

However, the OS X Update 10.9.4 is still showing in the app store update window. When I click on update, then restart as prompted to finish installation, the computer restarts (quickly) and never installs the OS update. After the restart, I still am running 10.9.3 per the "About this Mac" window. I've tried this multiple times with the same result - the computer restarts after I click on update and it restarts but never installs 10.9.4. What's more weird is that in the "Updates Installed in the last 30 days" section, the OS X 10.9.4 update is listed several times (each time I've tried to install it) even though it never installs.

I've tried restarting multiple times outside of the app store, as well as verifying disk permissions. And the OS X 10.0.4 update doesn't show in the purchases section in the App store to try to re-download.

Any help would be appreciated.