On installing ArcGIS Server 9.3 Service Pack 1 for the Java Platform on Windows Vista and Windows Server 2008, the following error message displays:
"Error 1722. There is a problem with this Windows Installer Package. A program run as a part of the setup did not finish as expected. Contact your support personnel or package vendor"
Error 1722 is a Windows Installer error code that indicates that the installation process has failed. The error occurs because of a custom action that could not run on Windows Vista and Windows Server 2008.