When i put tropical acclimated bee in apiary, my game crash in few minutes.

The Binnie mod don't report in stacktrace but i think not become from forestry because my forestry bees have normal operation.

Description: Ticking block entity

java.lang.IllegalStateException
	at com.google.common.base.Preconditions.checkState(Preconditions.java:429)
	at forestry.apiculture.BeekeepingLogic.queenWorkTick(BeekeepingLogic.java:295)
	at forestry.apiculture.BeekeepingLogic.doWork(BeekeepingLogic.java:252)
	at forestry.apiculture.tiles.TileBeeHousingBase.updateServerSide(TileBeeHousingBase.java:151)
	at forestry.core.tiles.TileForestry.func_73660_a(TileForestry.java:86)
	at net.minecraft.world.World.func_72939_s(World.java:1829)
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:612)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:765)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:239)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524)
	at java.lang.Thread.run(Thread.java:745)

crash-2017-12-20_17.54.57-server.txt
same issue too.

Yup, Temp1011 I think it's the exact same issue

Is it safe to still use the bees if you just don't use the acclimater?

@Ruidolph Yes, normal bees are completely safe.

I’m experiencing this problem as well.

I have hit this error also. Looking into the Forestry side, here is the context of the error:

IBeeGenome mate = queen.getMate();
Preconditions.checkState(mate != null);

I looked into the acclimatiser code to see if something was causing the queen to return a null mate and tracked it down to Splicer.setGene

IIndividual individual = speciesRoot.templateAsIndividual(primaryAlleles, secondaryAlleles);
if (original.isAnalyzed()) {
individual.analyze();
}
if (original instanceof IBee) {
IBee individualBee = (IBee) individual;
IBee originalBee = (IBee) original;
individualBee.setIsNatural(originalBee.isNatural());
}
NBTTagCompound nbt = new NBTTagCompound();
individual.writeToNBT(nbt);
target.setTagCompound(nbt);

Apparently, speciesRoot.templateAsIndividual creates a new instance using the genome constructor of the Bee class which does not set the mate field. This is a hunch, rather than actually running it to see. If I get some time, I'll try to load up the the mods in a dev instance to try it out, but this is the best I can offer at the moment.

I tracked that down to checking queen conditions myself, but seeing your summary of the code gave me an idea. Sure enough, this bug does not occur if you acclimatize a princess and drone rather than a queen. Many other bee manipulation machines (like the Genetic Imprinter from Gendustry) do not accept queens at all, possibly because of issues like this. I recommend disallowing queens from the Acclimatizer immediately, pending a possible fix.