Impossibile installare draftsight 2018 2.0, scrivo in calce l'errore che il programma riporta: "There is a problem with this Windows Installer package.
A program required for this install to complete could not be run.
Contact your support personnel or package vendor. Action: Uninstall_swinstactsvc.exe, location: C:\\...\\swinstactsvc.exe, command: -swup DSP"

Come poterlo risolvere?