When you tried to install the User Tools for Autodesk® Inventor™ 2009 on the Windows Vista™ operating system, you received the following error message:

There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor.

For more information on this issue, including potential causes, workarounds, and resolutions, see: AutoDesk Knowledge Base Article TS1085946.