This is most likely because vanilla doesn't expect a building that has some sort of hole to be air tight and assumes that is an error. I wonder if it's possible to make it so you can choose if they are air tight or not in configs for peeps that don't want these to be air tight.

Got a couple of red errors with your mod and only rock-bottom basic load. Details and log submitted in GitHub.

Config error in NEC_ReinforcedEmbrasure: is airtight but Fillage is not Full
Config error in NEC_ReinforcedEmbrasure: impassable, player-buildable building that can be shot/seen over.

Thank you!
Glad their air TIGHT now :)

hell yeah

Updated: Walls are airtight now!

Hello are the walls airtight now?

Will look into this

after trying them out it seems they are not, which is a shame since the base metallic walls (steel, plasteel, silver, gold, uranium and bioferrite) ARE airtight so i might have to wait to use them on my asteroid base :(

one of my favorite mods glad to see it back, are the walls airtight by chance?

Yes, a turret can shoot through them

can turret surrounded by Embrasures still shoot?

Updated: Rimworld 1.6 compatibility

Thanks Aleph

Update for Rimworld 1.6 is currently WIP

There are quite a few errors related to missing methods, however, recompiling the mod against the latest harmony and rimworld binaries fixed them.

thank you! Hope the error messages are gone soon!

Mahalo from Honolulu. I have been looking for someone who updated this!

Thank you so much, bro. This is a must-have mod

If you have developer mode turned on, you can see some messages in debug log (most likely, about localisation).
I have tested the mod a lot and haven`t faced any issues in the game.
However, I will try to fix these as soon as possible.