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My minecraft crashes every time I join a LAN. I get java.lang.NullPointerException: Unexpected error.

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Shall we play a game?
Time: 8/28/17 11:00 PMDescription: Unexpected error
java.lang.NullPointerException: Unexpected error at mca.packets.PacketSetSize.processOnGameThread(PacketSetSize.java:64) at radixcore.network.AbstractPacketHandler.processPackets(AbstractPacketHandler.java:161) at mca.core.forge.EventHooksFML.clientTickEventHandler(EventHooksFML.java:135) at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_81_EventHooksFML_clientTickEventHandler_ClientTickEvent.invoke(.dynamic) at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185) at net.minecraftforge.fml.common.FMLCommonHandler.onPostClientTick(FMLCommonHandler.java:344) at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1851) at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1055) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:371) at net.minecraft.client.main.Main.main(SourceFile:124) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
-- System Details --Details: Minecraft Version: 1.10.2 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_25, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 949323472 bytes (905 MB) / 2134114304 bytes (2035 MB) up to 2134114304 bytes (2035 MB) JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: MCP 9.32 Powered by Forge 12.18.3.2185 17 mods loaded, 17 mods active States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored UCHIJA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) UCHIJA FML{8.0.99.99} [Forge Mod Loader] (forge-1.10.2-12.18.3.2185.jar) UCHIJA Forge{12.18.3.2185} [Minecraft Forge] (forge-1.10.2-12.18.3.2185.jar) UCHIJA mercurius_updater{1.0} [mercurius_updater] (MercuriusUpdater-1.10.2.jar) UCHIJA ambientsounds{2.0.0} [AmbientSounds] (AmbientSounds v2.0.4 mc1.10.2.jar) UCHIJA BiblioCraft{2.2.5} [BiblioCraft] (BiblioCraft[v2.2.5][MC1.10.2].jar) UCHIJA BiomesOPlenty{5.0.0.2236} [Biomes O' Plenty] (BiomesOPlenty-1.10.2-5.0.0.2236-universal.jar) UCHIJA customspawner{3.10.1} [DrZhark's CustomSpawner] (CustomMobSpawner 3.10.1.jar) UCHIJA PTRModelLib{1.0.0} [PTRModelLib] (Decocraft-2.4.1_1.10.2.jar) UCHIJA props{2.4.1} [Decocraft] (Decocraft-2.4.1_1.10.2.jar) UCHIJA mocreatures{10.0.6} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod-10.0.6.jar) UCHIJA harvestcraft{1.10.2j} [Pam's HarvestCraft] (HarvestCraft-Mod-1.10.2.jar) UCHIJA JEI{3.14.7.419} [Just Enough Items] (Just-Enough-Items-Mod-1.10.2.jar) UCHIJA RadixCore{1.10.2-2.1.3} [RadixCore] (RadixCore-1.10.2-2.1.3-universal.jar) UCHIJA MCA{1.10.2-5.2.3} [Minecraft Comes Alive] (MCA-1.10.2-5.2.3-universal.jar) UCHIJA cfm{4.1.2} [MrCrayfish's Furniture Mod] (MrCrayfishs-Furniture-Mod-1.10.2.jar) UCHIJA WholeTreeAxe{1.5.0} [Whole Tree Axe] (Whole-Tree-Axe-Mod-1.10.2.jar) Loaded coremods (and transformers): GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13399 Compatibility Profile Context 15.201.1101.0' Renderer: 'AMD Radeon(TM) R5 Graphics' Launched Version: 1.10.2-forge1.10.2-12.18.3.2185 LWJGL: 2.9.4 OpenGL: AMD Radeon(TM) R5 Graphics GL version 4.5.13399 Compatibility Profile Context 15.201.1101.0, ATI Technologies Inc. GL Caps: Using GL 1.3 multitexturing.Using GL 1.3 texture combiners.Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.Shaders are available because OpenGL 2.1 is supported.VBOs are available because OpenGL 1.5 is supported.
Using VBOs: Yes Is Modded: Definitely; Client brand changed to 'fml,forge' Type: Client (map_client.txt) Resource Packs: Current Language: English (US) Profiler Position: N/A (disabled) CPU: 4x AMD A8-7410 APU with AMD Radeon R5 Graphics

remove radixcore