MC: 1.15.2
Aato: 2.0.2.1

Crash:
Crash occurs when loading up Aato. Unsure if it is soley this mod or the compilation of mods.

Log:
latest.log

Screen cap:

Looked a bit deeper into logs and found this:
Caused by: java.lang.ClassCastException: net.minecraft.world.gen.feature.NoFeatureConfig cannot be cast to net.minecraft.world.gen.feature.DecoratedFeatureConfig
at waylanderou.almostalltheores.OreGeneration.handleInfestedStone(OreGeneration.java:616) ~[?:2.0.2.1]
at waylanderou.almostalltheores.OreGeneration.setup(OreGeneration.java:52) ~[?:2.0.2.1]
at waylanderou.almostalltheores.AlmostAllTheOres$$Lambda$6263/2139197591.run(Unknown Source) ~[?:?]
at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1618) ~[?:1.8.0_51]

Duplicate of #3
I should not have closed it before releasing the fix... Anyway, thanks for reporting. Issue is fixed in version 2.0.2.2 (released minutes ago) as well as a few other minor problems.
Don't forget to tell me when you release your modpack so I can try it out ! ; )