After installing Vault 2013 Service Pack 1 Update 1, you click on Help>About from the Pull down menu's
You notice that that under Build 220.127.116.11 you see "Update 2"
This should read "Update 1"
Its minor, but possibly confusing. The build number indicates the installed versio. Autodesk development are not currently intending to address this. However, it will be addressed if the opportunity arises in another update\fix.