I get a crash with Biomes O' Plenty 6.1.0.2239 which add the white sandstone and AbyssalCraft when loading Minecraft. https://pastebin.com/jnjicpgj

same crash here as well. this is only with the 2 newest versions of BiomesOPlenty.
This wasn't an issue in versions BiomesOPlenty-1.11.2-6.1.0.2238, only presented its self in versions BiomesOPlenty-1.11.2-6.1.0.2239 and BiomesOPlenty-1.11.2-6.1.0.2240

unsure if Biomes mod will change anything to fix this, so hope you are willing to.

log included.
net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from AbyssalCraft (abyssalcraft)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 32767
at biomesoplenty.common.block.BlockBOPWhiteSandstone.func_176203_a(BlockBOPWhiteSandstone.java:107)
at com.shinoow.abyssalcraft.common.blocks.BlockCLiquid.oresToBlocks(BlockCLiquid.java:144)
at com.shinoow.abyssalcraft.common.blocks.BlockCLiquid.addBlocks(BlockCLiquid.java:189)
at com.shinoow.abyssalcraft.init.BlockHandler.postInit(BlockHandler.java:494)
at com.shinoow.abyssalcraft.AbyssalCraft.lambda$postInit$2(AbyssalCraft.java:70)
at java.util.ArrayList.forEach(Unknown Source)
at com.shinoow.abyssalcraft.AbyssalCraft.postInit(AbyssalCraft.java:70)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:641)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)

That's partially their fault for not filtering out invalid metadata values when converting meta to state, but I might as well sneak in something on my end to handle metadata wildcards.

thanks for looking into it and considering doing that. might be good to do as you stated for support of other mods, but seems that BiomesOPlenty mod created put out a patch this morning that seems to correct this, just making you aware. thanks.

for anyone else with this issue, ...
update of
BiomesOPlenty-1.11.2-6.1.0.2243-universal.jar confirmed to fix this issue.