It is impossible to build a nuclear reactor

[SUNsung]

I'm trying to build a reactor and it keeps telling me: "the power plant seems to be built incorrectly".

The first assembly followed these instructions: https://mt-builder.neocities.org/nuclreact

After many unsuccessful attempts (I even tried a clean world with one mod installed), I finally decided to read the documentation.
I didn’t find any errors, but I tried using lead instead of stainless steel. (as I later noticed when trying to start the reactor, all the stainless steel itself changes to lead)

In this mod, everything works for me except the nuclear reactor((

[SmallJoker]

I did follow the same instructions and on my side it works well:

Have you yet ticked the checkbox "automatic start"? Otherwise it might not start due to missing blocks in its shell.

[BuckarooBanzay]

The first assembly followed these instructions: https://mt-builder.neocities.org/nuclreact

you might have better luck with lead instead of stainless steel:

technic/technic/machines/HV/nuclear_reactor.lua

Lines 106 to 121 in 410e341

	The standard reactor structure consists of a 9x9x9 cube. A cross
	section through the middle:
	CCCC CCCC
	CBBB BBBC
	CBLL LLBC
	CBLWWWLBC
	CBLW#WLBC
	CBLW|WLBC
	CBLL|LLBC
	CBBB|BBBC
	CCCC|CCCC
	C = Concrete, B = Blast-resistant concrete, L = Lead,
	W = water node, # = reactor core, | = HV cable
	The man-hole is optional (but necessary for refueling).

[SmallJoker]

In fact I used stainless steel for my build. technic accepts both.