That looks to be the 'refresh build' from a few weeks ago that was pulled due to MS fixing it with a patch. RU1 MP1 is actually now at 3876:
http://www.symantec.com/docs/TECH154475
...so you may want to try this version instead.
There are additional troubleshooting steps in this article, which may apply (assuming your Windows version is the same as what's referenced):
http://www.symantec.com/docs/TECH247909