You should read the post immediately above yours: (emphasis mine)

seablock is meant to be played in exact mod configuration that is in modpack. updating mods to newer versions is not supported .


Read it, I'm just flagging issues and am always interested in seeing what changes have been made ...

FYI - I've posted this in Angel's bug report and am posting it here as I'm not sure which forum/author would fix it.

There appears to be a bug between the updated refining mod 10.9 and seablock 3.3.

Your updates to Petrochem, smelting and bio processing are working without a problem.

Error is as ...

Hi Angel,

There appears to be a bug between the updated refining mod 10.9 and seablock 3.3.

Your updates to Petrochem, smelting and bio processing are working without a problem.

Error is as follows
Failed to load mods:__SeaBloack__/data-updates.lua:180: attempt to index field 'slag-processing ...

Just updated Angel's PetroChem & Refining to the latest patch. There is a clash/issue with your latest .17 version of Sea Block.

Love your mod so far (got to Blue Science however am restarting a 0.17 map).