Im still not seeing the script errors, on a new 0.12.21/0.2.4 game with both coral and germlings being used. Ill keep messing with it to see if I can replicate the error.

The Error Message appeared after about 27 hours playing.
I started a new world and updated to 2.4. just as powerafro.
However ...

Is this only happening with the coral seeds and not the germlings?

If so, I havent done any tests with the coral seeds yet, Ill have a look at those tomorrow and see if I can replicate it.

Got the Same Error Message now after playing more than 24 hours
got Factorio 0.12.20 and don't use any ...

Started a new Game with Treefarm 0.2.2. Now I can't load the Game and got this Error Message: