Hello, 

I have been trying to install the 2019 SP2 Draftsight install for X64 on Windows 10. When un-installing my 2018 version i get an Error 1721 and am unable to complete the un-install. When trying to install 2019 i get a very similar message. Ive tried a few different things i have found on the web to try and fix the problem such as re-booting the windows installer through Services (didnt work). I also tried booting in safe mode and un-registered the re-registered the installer in the cmd prompts, which also didnt work. 

Has anyone been able to figure out how to fix this error?