I have a basic MSI project and would like to do the following: First, search the registry for an entry of a software required for the application being installed. Then I get the value in that registry to check for the correct file for the required software. I wrote an install script that does this and pops up a message box when the required software is not found. What I would like to do is call the .exe that installs the required software when the required software is not found. Is there a way to do this from inside an installscript? The problem I see is that this is a conditional action and I don't know how to make an action conditional on what occurs in the install script. Can anyone help?
Is it an option to use a system search to verify the registry data, and then use the search results in an action condition (avoiding the InstallScript action)?
