When I go to open DraftSight the program will not open. I tried removing the program to download the latest version but I get an error box as follows:

ERROR 1721. There is a problem with this Windows installer package. A program required for this install to complete could not be run. Contact you support personnel or package vendor. Action: Uninstall-swinstactsvc.exe,location: C:\\Program Files\\ Dassault Systemes\\DraftSight\\bin\\Setup\\i386\\Swinstactsvc.exe, command:- swup DSP