Way to go Symantec, this update just trashed my installation as it wiped the previous version and the installer for SP2 has a file missing from one of its CAB files
Everytime I run a "Repair" install then run the service is keeps attempting to apply the patch again which trashes it all. I'm now removing the installation so hopefully a clean install will allow me to work again and I'll wait for the next release.
The least you can do is provide these files tested before releasing them