I agree with Mark's comments completely, but I would go one step further and say don't use the tool to patch production. I find the tool convenient for seeing if a machine is missing a patch, and even downloading the patch, but trying to apply multiple patches has never worked for us. We have had instances where the tool downloads the wrong version of a patch, so of course the patch won't install. We have also had instances where it shows patches are missing that aren't applicable to the machine.
The tool is a good idea but not fully baked, and I would not trust patching my production machines with it.