So I get a crash on startup of minecraft when I use the newest version of Modular Machinery and Modular Diversity but if I keep Diversity on the newest version and downgrade Machinery to 1.10, it works fine.

Minecraft-Version: 1.12.2
Machinery-Version: 1.11.1
Diversity-Version: 1.8
Log: https://pastebin.com/QtpuZreL

I guess it's an error by Machinery, that's why I report it here. I think so because no Diversity version works with the newest Machinery version.

Because Modular Diversity is way behind and STILL HASN'T UPDATED YET. This is in the changelog for Modular Machinery's release.

Go bug Bord to update.

Edit:
Also, if no version of an Add-On works with the newest release of it's parent mod, why would you assume the parent mod was at fault?