garaden

I had trouble here as well. After a few tries I got it to work. I think it's important to decouple immediately when fuel runs out, and fire the engine immediately after that. Which does tend to blow up the bottom stage lol. But the SAS can handle the disturbance. Edit: I tried it a few more times and it seems pretty arbitrary. Sometimes decoupling pops it off immediately, sometimes it takes a bit to fall off, sometimes it doesn't pop off until you fire the engine. But at least for me, all of those are fine for finishing the mission, as long as you start the engine ASAP and the lower stage pops off within a second or so.

This worked, thanks! Should I file a bug report?

KSP version: Version 1.12.1.3142 on macOS 11.4 via Steam. Clean install, just bought it today. What I was trying to do: Complete the 3rd tutorial, "Intermediate Construction". Mods / Add-Ons: All Stock Steps to replicate: 1) Open "Tutorials" 2) Open 3rd tutorial, "Intermediate Construction" 3) Enter the VAB 4) Click through "Next" until the tutorial tells you to click "Open" 5) Click the "Open" icon in the upper right What I expect to happen: The tutorial wants you to load the "Hopper" vehicle. I expect to see 1 vehicle in the screen, the "Hopper". What actually happened: I see 23 much more complicated vehicles and no "Hopper". I even tried searching for "Hopper" and came up empty. Attempted fixes: - Disabling Steam Cloud, uninstalling from Steam, manually deleting whatever was left in ~/Library/Application Support/Steam/steamapps/common/Kerbal Space Program, reinstalling from Steam. "Hopper" still missing. - Verifying game files via Steam. No problems detected. "Hopper" still missing. Screenshots: Imgur Player.log: Pastebin System specifications: Dropbox