The mod Planets require landing first (1.0.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event planets-require-landing-first::on_player_changed_surface (ID 59)
Unknown technology name: visit-nauvis
stack traceback:
[C]: in function 'script_trigger_research'
planets-require-landing-first/control.lua:4: in function <planets-require-landing-first/control.lua:1>

Yep I don't know how I missed that, it'll be fixed as soon as I push the next version

Thank you,

I still crash, this is the current error. I always test new mods in a creative world before adding to my current play, and it only seems to crash when I am in creative mode (ctrl-alt-e).

The mod Planets require landing first (1.0.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event planets-require-landing-first::on_player_changed_surface (ID 59)
planets-require-landing-first/control.lua:4: attempt to index field 'character' (a nil value)
stack traceback:
planets-require-landing-first/control.lua:4: in function <planets-require-landing-first/control.lua:1>

Oh that makes sense, I'll fix it rq

Thank you, No crash now.