Revit Update Error: Cannot Locate Product

When you are trying to install an update for Revit you may get the following error:

"The update release could not be installed because the expected Autodesk product could not be located on your computer.  Make sure that you are using the correct update release for the product."

There are two basic reasons for this error:

1. You have the wrong release number ie. trying to install 2012 on 2013
2. You have the wrong type of product grouping ie. Standalone or Building Design Suite

Revit standalone:

Update 1: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=20121970&linkID=9273944

Update 2: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=20679231&linkID=9273944

as part of the design suite

update 1: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=20121968&linkID=16831210

update 2: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=20679039&linkID=16831210

More on this can be found on this forum:

http://forums.autodesk.com/t5/Autodesk-Revit-Architecture/2013-Revit-Update-Error-quot-Product-could-not-be-located-on/td-p/.UORmm29X0fg