Hi, I need to invoke installer of a Basic MSI installer from another Basic MSI installer silently. For this, in first installer, i created a custom action of type "New exe(path referencing a directory)". I specified the action properties correctly as: Working directory -> the location where the second installable setup.exe is created beforehand Filename & Command line -> setup.exe /S /v"/qn" Return processing -> Synchronous (check exit code) When I'm running the first installer, i'm getting Error 1721: There is a problem with this Windows Installer Package. A program required for this install to complete could not be run.... And if i change "Return processing" to any other option, the installation completes successfully, but second installation (silent one) is not done at all. Also, if i change "Working directory" to System folder and give absolute path for second setup.exe in "Filename & Command line", i start getting Error 1722: There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected... Please provide some assistance to overcome the problem. Any help appreciated. Thanks Amit ... View more