But, I am running SMS 2.0 SP5. Any idea what the problem may be?
I'm not sure the issue is with the level of SMS 2.0 service pack but most likely with the version of the Scanning Tools you are downloading. Microsoft recently upgraded the Scanning Tools to include the latest version of MBSA. Make sure you are downloading them manually from the following location: http://www.microsoft.com/smserver/downloads/20/featurepacks/suspack/.
This was first published in September 2004