Can components and intercontinental missiles be manufactured with the participation of Electromagnetic plant and Cryogenic plant?

Hello! Yes, that they can be; that is presently the rocket-control-units, advanced rocket-control-unit recipe, atomic-bomb, and atomic-warhead can each have their default crafting-machine, as well as additional crafting-machines, defined in the "Startup" settings: "electromagnetics", "cryogenics-or-assembling", and/or "cryogenics" are what you are likely looking for.

As far as the ballistic-rocket-parts, while not presently configurable, they're very much on my list of features to add the same level of configurability settings for.

An error occurred before loading this mod and before preparing to launch the space platform.
Error while running event configurable-nukes::on_tick (ID 0)
...s__/scripts/controllers/configurable-nukes-contoller.lua:283: attempt to index field 'surface' (a nil value)
stack traceback:
...s__/scripts/controllers/configurable-nukes-contoller.lua:283: in function <...s__/scripts/controllers/configurable-nukes-contoller.lua:87>

My apologies for the error. I believe I know how to prevent it (simply need to add a validity check). Hope to have a fix out shortly.

That said, I am presently having a difficult time understanding how exactly it is occurring. As I can't seem to recreate it myself yet, is there more context you might be able to provide as to what you were doing, or what was happening at the time the error occurred?

I just managed to recreate it, no worries on extra context.

Once again, apologies for the error - I hope to have a fix out shortly.

In sandbox mode, if a normal rocket well automatically requests the platform and then launches, it will result in an error.
Error while running event configurable-nukes::on_tick (ID 0)
...s__/scripts/controllers/configurable-nukes-contoller.lua:283: attempt to index field 'surface' (a nil value)
stack traceback:
...s__/scripts/controllers/configurable-nukes-contoller.lua:283: in function <...s__/scripts/controllers/configurable-nukes-contoller.lua:87>

With the release of version 0.5.2, this should be fixed. Thank you for bringing it to my attention.

Do let me know if you encounter any other issues, or have any questions or suggestions.

thanks