Requested from Shavlik to release KB979495 but have not seen the patch released.
Created a custom patch definition for KB979495, it will detect, download but will not install. I have not found a log source as to why it fails to install. Perhaps it's due to not having any command line within the custom patch for 979495.msu.
Does the batch file process? If you navigate to the C:WindowsPropatchesInstall directory on the target machine, you should see a batch file, which will have either a '.bat' or '.his' extension. If the file has a '.his' extension, then the script completed (the file extension is changed at the end of the script).
What happens when you manually run the patch on the target machine?