After updating Cerys and loading a savegame:
Seems like Cerys now added required bplib dependency, so both mods now are not compatible.

An interface already exists under with name: bplib
stack traceback:
[C]: in function 'add_interface'
rubia/lib/bplib-internal.lua:135: in main chunk
[C]: in function 'require'
rubia/lib/bplib-bbox.lua:27: in main chunk
[C]: in function 'require'
rubia/lib/bplib-blueprint.lua:11: in main chunk
[C]: in function 'require'
rubia/script/wind-correction.lua:452: in main chunk
[C]: in function 'require'
rubia/control.lua:14: in main chunk

For anyone who's trying to play immediately, rollback Cerys version to 4.8.2 and make sure Blueprint Library mod is disabled until this gets sorted out, that seems to make Rubia work again

I got this today as well, I am not sure why there's a need to update Cerys every day with so much game breaking changes.

same here

Loup says they are writing a patch for this in Rubia.

Cerys will not be patched, so when that update arrives I recommend people upgrade Cerys back to the v4.9 versions, which have a good chance of being the long-term stable version of Cerys after the recent development cycle.

Nice to know, thanks for the quick update.

Thanks everyone for the reports. I already know how to fix the bug, but it's stuck in a build of Rubia with a half-finished feature that needs testing before I can launch it. I will have it out in a few hours.

For now, please downgrade Cerys.

I just pushed out a fix. Thanks everyone for your patience.

Thanks for the quick fix !