In version 2.0.0 of this mod a number of Harmony transpiler patches were introduced for improved performance over the previous Harmony postfix/prefix patches.

Transpiler patches are finicky in their nature as they operate on the level of individual IL instructions.
This means that if other mods apply their own transpiler patches to the same methods that this mod applies transpiler patches to, it may cause this mod's transpiler patches to fail to apply—and the inverse is also true: this mod's transpiler patches may cause other mods' transpiler patches to fail to apply.

In short, if you experience any errors in the dev console relating to transpiler patches failing to apply, please report them here along with a list of the mods that you're using, so that the incompatibilities can be investigated.