Hello, if have a install shield Setup.exe with chained msi packages and a separate setup.exe which is installed as prerequisite. I need to uninstall the prerequisite during uninstallation process. For that I created a custom action with return processing "Asynchron (ignore exit code) (I also tried synchron) During install process of the setup.exe this custom action always interferes with the uninstallation process of the chained msi packages and fails to uninstall the prerequisite. error 1618: “Another installation is already in progress. Complete that installation before proceeding with install.” Is there any possibility to schedule the custom action properly? Thanks for your help ... View more

Hi, I'm working on a setup.exe which shall uninstall some older versions of different programs before starting the actual installation process. I've implemented this with some CAs in the "Installation/User Interface" sequence, and it worked fine. The problem is that the setup.exe shall be executed in silent mode. I didn't manage to place the CAs for uninstall in the "Installation/Execute" sequence in a way, that they are properly executed. Maybe you can help me? Many Thanks ... View more