I think what is happening is:
* Your module aliases with someone else's.
* Game thinks your craft has external dependency, but it's not loaded yet.
* Module goes missing.

I think a lot of the things that happen are mutual overwrites. I prefix every single module I use in my designs - including even non-standard spacers - with my unique prefix, unless it's a core module.

I think some strange bugs are going on because most of my designs just become unplayable and cause the game to straight up crash, and maybe the same data corruption has reached on those saved on Steam.

For some reason I'm getting missing modules and other malformations with both your cutters these days.