On March 1st my Draftsight crashed. Before I learned of the Hotfix, I uninstalled and attempted to reinstall from scratch. Now I have this error when installing: "Error 1721. There is a problem with 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: .../swinstactsv...

Any ideas would be helpful at this point.