When building a project created with InstallShield that is a minor upgrade, the following error may occur:
"Error -6423: The project contains a Minor Upgrade item that references the setup [1]. However, the referenced setup can only be upgraded with a Major Upgrade. Please use the Major Upgrade item or the automatic upgrade item."
[1] is a placeholder that contains the full path to the MSI file being referenced as the previous setup in the Upgrades view.