Not working for me. Tried the hotfix first, whan that failed to install I tried new installation of SP1, but no luck. I get The 1722 error  (register_dsautomationdll)  

ITs an older system running windows XP SP3.   My first atempt was with an older version of windows installer 3.5   

I have tried deactivating, and reactivating windows installer.  When installation still fails, I updated windows installer to version 4.5 but the Draftsight installation still stops at the same place, with same error every time.