Thank you for the information.

Yes, you're correct, I was just pulling the zip package and copying over the existing files. I'll be sure to delete the directories in my existing installs that are listed in the zip package when unzipping new builds going forward.

I've tried to join a multiplayer game twice and gotten a "failed to apply migration" for the 2018-08-03_Factorio_0.17.0.lua migration. If I delete this and all migrations with a later date in the name, I can join the game fine. I didn't try only deleting the one failing migration.

I am playing on ...