I was excited to download 2018 SP3 - until I wasn't! Draftsight takes several minutes to load/start now. Once it starts, it freezes and crashes often and unexpectedly. I am running Mojave and much fewer problems with SP2. When I downloaded SP3, it overwrote my SP2 DMG file and now I can't find any way to revert back - at least until SP3 fixes some major issues. Help!