Shavlik didn't release the patch, it is a MS patch and there are no known issues that we know of. You should contact Microsoft or search their knowledge base to see if other customer have seen the same issue. It looks like the patch is uninstallable if installed through Protect. You can scan the machines again to show the patch as installed, right-click on the patch and choose to uninstall it. I don't know if you will need a reboot.