java.util.concurrent.ExecutionException: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_252]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_252]
at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:846) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:467) [nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:784) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:630) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_252]
Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:657) ~[?:1.8.0_252]
at java.util.ArrayList.get(ArrayList.java:433) ~[?:1.8.0_252]
at net.minecraftforge.event.world.BlockEvent$MultiPlaceEvent.(BlockEvent.java:284) ~[BlockEvent$MultiPlaceEvent.class:?]
at com.creativemd.littletiles.common.util.place.Placement.place(Placement.java:165) ~[Placement.class:?]
at com.creativemd.littletiles.common.action.block.LittleActionPlaceStack.placeTile(LittleActionPlaceStack.java:148) ~[LittleActionPlaceStack.class:?]
at com.creativemd.littletiles.common.action.block.LittleActionPlaceStack.action(LittleActionPlaceStack.java:100) ~[LittleActionPlaceStack.class:?]
at com.creativemd.littletiles.common.action.LittleAction.executeServer(LittleAction.java:307) ~[LittleAction.class:?]
at com.creativemd.creativecore.common.packet.PacketReciever$2.run(PacketReciever.java:117) ~[PacketReciever$2.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_252]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_252]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
... 5 more

Latest Little Tiles 1.5.2

Please post a crash report

There was no Crash. I think console errors can reportet to. Because they may trigger a crash at some point.

The problem is that what other mods do you have it's important also the forge version.

Please update to the newest CreativeCore and LittleTiles version, if the issue still appears make sure to send me the entire log file. Will close this issue for now.