I do have the same problem. It hapened when i got of the snowfox bike leaving it into its base. On the big Island where you find the snowfox. Since then i found that the problem was from the safe file. Is the "scene-objects.bin" that is corrupted in…
I did find the solution. Is a problem of your safe file. I had to delete this file "baked-batch-cells-11-19-8.bin" and the rocket is working. is located in Steam\SteamApps\common\SubnauticaZero\SNAppData\SavedGames\slotXXXX\CellsCache or you can als…