Не удалось загрузить следующие моды: Error while running setup for entity prototype "electric-mining-drill" (mining-drill): When next_upgrade is set entity mining result must not contain item product with "hidden" flag set. Mining results with no item products are allowed.

Krastorio2-spaced-out
Without this, the mod will throw an error.

Are you sure you're using version 1.7.0 or 1.7.1 of Simple Seablock (depending on whether you're playing Factorio 2.0 or 2.1)? That looks exactly like one of the errors I fixed with the 1.7 release where I introduced K2SO compat.

If you are in fact using one of the 1.7 versions, please provide a list of all installed mods and their versions, as it's likely an interaction with another mod causing the issue, given the issue you're reporting was fixed in the testing I did.

2,1

I removed all the mods, leaving only the dependencies, and the same thing.

I just tested with the latest version of Simple Seablock (1.7.1) and the latest version of K2SO (2.0.7) on Factorio 2.1 and it worked fine. If you would like me to investigate further I'll need you to provide the FULL list of mods you're using (including dependencies of other mods) and the exact version of each one.

https://ibb.co/8DfS15cg
https://ibb.co/MxsqFh9W

You have Krastorio2, but you don't have Krastorio 2 Spaced Out enabled, meaning none of Simple Seablock's K2SO compatibility code is running. As per Krastorio 2's own mod page, it does not properly support Space Age (which is a hard requirement of Simple Seablock) and recommends installing K2SO alongside it. If you install K2SO things should work properly.

In your fashion, this is an optional dependency!

I may update things to prevent the crash on startup when you have Simple Seablock and Krastorio 2 without K2SO, but even with that fix, this still won't be a supported scenario.

Krastorio 2 says it does not work properly with Space Age but without K2SO. Simple Seablock requires Space Age. Therefore there is no valid scenario with both Krastorio 2 and Simple Seablock enabled, but without K2SO enabled.

This crash should no longer happen with 1.7.2, but also as I mentioned this is still not really a supported way to play. In fact, shortly after you start, Krastorio will give you a big red warning message saying things are probably not going to work. However, the 1.7.2 fix should also make things more resilient to crashes if other mods introduce upgraded mining drills.

I play with K2SO, but decided to look at the difference in technologies, saw an error and wrote.

How can I obtain initial biomass for military science on Nauvis without visiting Gleba?

That's an excellent question. As I mentioned in https://mods.factorio.com/mod/SimpleSeablock/discussion/69699c351640e5733c568d2f, I added K2SO compat due to requests for it but I haven't given it a full playtest with the combination, looks like this was a miss. Thank you for the report.

The just-released 1.7.3 should fix this. Added a recipe for biomass from wood unlocked by the Bioprocessing tech. And now Military depends on Bioprocessing instead of the other way around. Like the other "bootstrap" recipes, the wood to biomass one is intentionally inefficient to encourage you to stop using it quickly in favor of the "real" ones. Also, this does move military a bit later in the tech tree, but I'm OK with that given the fact that in seablock you don't have any friendly locals to deal with.

and what about the productivity of steel with k2 resources, will it remain the same?
https://ibb.co/393FP38Z

Simple Seablock doesn't touch steel productivity, mining productivity only affects recipes that "replace" mining drills or pumpjacks like ore creation, but steel is a recipe that's farther down the line and is affected by Steel Productivity research, which I don't touch. It's a coincidence that it has the same % in your screenshot.