I have a few systems that will not launch my application and give error id=2, system cannot find the file specified. The application is the installer for Office 2007. It is being accessed via UNC path \\server\files\Office 2007\setup.exe When I manually enter that path via Windows Explorer, the setup comes right up so I don't think it should be an access issue. I am running the object under unsecure system user due to having to be compatible for non-admin users. I'm not sure what would cause this to work on some PCs but not others. The ones it has failed on thus far is developer machines with large amounts of different software installed. Is there something to check on the machines that perhaps these applications could have broken with Zen?