This is the bug I got, most likely it is connected with the warp drive machine.

Error while running event water-is-not-infinite::on_tick (ID 0)
LuaEntity belongs to surface planet_51_player (index 10) but a LuaEntity belonging to surface nauvis (index 1) was expected.
stack traceback:
[C]: in function 'draw_text'
water-is-not-infinite/control.lua:837: in function 'pump_processing'
water-is-not-infinite/control.lua:1340: in function <water-is-not-infinite/control.lua:1331>

Here is the link to the save.
https://drive.google.com/drive/folders/1XSOiXbQGbhCxQRC3jVEHqTt1p_VyLZ5R?usp=drive_link

Thanks for the report!

This is expected for now: the mod hasn’t been tested with Space Age yet and currently assumes there is only one surface (Nauvis). The error happens because it tries to draw text on Nauvis while the entity is on another surface. I’m working on proper multi-surface support and will fix this in the next update or the one right after