5.2 to 5.3 Service Pack Update Fails

Just working through my evaluation, I attempted to upgrade from 5.2 to 5.3. The service pack says it updated successfully:

May 6, 2015 2:11:26 PM [com.adventnet.tools.update.installer.ApplyPatch] [INFO] : Service Pack installed successfully

But immediately following this line in the log file is a Java Exception error:
May 6, 2015 2:11:52 PM [com.adventnet.tools.update.installer.Unzipper] [SEVERE] : ERRUnexpected Error. Please click View Log>> for more detailsjava.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.adventnet.tools.update.installer.Unzipper.contextPreInstallation(Unzipper.java:319)
    at com.adventnet.tools.update.installer.Unzipper.invokePreInstallationClasses(Unzipper.java:138)
    at com.adventnet.tools.update.installer.ApplyPatch.installPatch(ApplyPatch.java:273)
    at com.adventnet.tools.update.installer.ApplyPatch.run(ApplyPatch.java:223)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.RuntimeException: Stopping ::
    at com.adventnet.sym.adssp.patchupdate.UMPreInvoke.install(UMPreInvoke.java:235)
    ... 9 more

This happened on my main eval system (at which point some interface features such as password strengtheners have disappeared and other links do not work) as well as a unconfigured fresh 5.2 install.

At this point, I can't revert back to 5.2 as the service pack cannot be removed. What options do I have?

Thanks,
Gino