Everything starts with the user double clicking on the setup file (BlackBlade.ListActions.SharePointZip.2.0.setup.exe)

The welcome screen displays

The installer runs through system checks...

Notice that the system check has detected the solution is already installed

User selects to repair the solution. Note that the user is no longer prompted to enter license info or accept the EULA…

Previous solution copy is retracted and removed from farm…

Fresh copy of the solution file is deployed to farm…

Repair complete.