Exception ticking world / IllegalArgumentException crash on 1.12.2

[Geethebluesky]

On Forge 2641 and 2611 (tested both) I get the following crash after letting the game generate chunks for a while. The time varies depending on whether or not I have other mods loaded, but it's definitely chunkgen causing it as it stops whenever I remove the mod.

I know this isn't the Forge you built against, but currently the recommended Forge version for 1.12.2 is 2611 so I probably won't be the only one experiencing this!

java.lang.IllegalArgumentException: Cannot get property PropertyEnum{name=variant, clazz=class net.minecraft.block.BlockPlanks$EnumType, values=[oak, spruce, birch, jungle]} as it does not exist in BlockStateContainer{block=minecraft:air, properties=[]}

Crash log here (with no other mods but Optifine+shaders and Liteloader+Voxelmap), also: chunkgen.cfg I'm using

Version: chunkgen-1.12-1.5.0.jar - Mar 16, 2018

[Geethebluesky]

Bump?

Will support for 1.12.2 be added? Other chunkgen mods don't work too well with mods and their authors don't seem to want to add in support...