The Official CoreMod of the Lost Era Modpack.
It contains patches, ASMs and utilities necessary to make the pack's content mesh together without issues.
Some of these patches include:
-Preventing users from enabling crash prone options from OF
-Disabling light emitting handheld items in the Deep Dark
-Fixing IC2's Luminator when paired with Aroma's Uncomplications
Overall a collection of small changes that prevent crashes, fixes existing bugs and patches unintended intermod gameplay conflicts.
More information about the pack can be found here:
https://modrinth.com/modpack/the-lost-era/