When you try to upgrade a Microsoft Works suite to a 2007 Microsoft Office suite or program, the 2007 Office suite or program is not installed.
This problem occurs if Microsoft Works is not installed in the %programfiles%\Microsoft Works folder. By default, the Compliance Checking program (CCP) searches the %programfiles%\Microsoft Works folder for versions of Microsoft Works that can be upgraded to a 2007 Office suite.
For a decreased price, Microsoft offers the option to upgrade from certain products that qualify. The CCP is run to verify that a product qualifies for an upgrade to a 2007 Office suite or program. After the product is verified, the Setup program will start.