Impossible to uninstall / repair / install Launcher

The game does not allow me to uninstall / repair or install any version of the game. I am met with a message saying "This installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2318." 

I have also manually removed all Dungeon files yet it persists. I owned the beta beforehand and wanted to uninstall that before downloading the fresh version off of the download page.