PassoDuplo

I'm not using an intel cpu but disabling the splash screen solves the issue. Is this a bug with Mesa drivers?

I could only see the main menu once by luck Usually forge freezes at texture mipmap upload but always with a different block / file 1.11.2 - 13.20.0.2228 also has the same issue OpenJDK 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release [18:36:50] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [18:36:50] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [18:36:50] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker [18:36:50] [main/INFO] [FML]: Forge Mod Loader version 13.20.0.2345 for Minecraft 1.11.2 loading [18:36:50] [main/INFO] [FML]: Java is OpenJDK 64-Bit Server VM, version 1.8.0_121-solus, running on Linux:amd64:4.9.32-31.lts, installed at /usr/lib64/openjdk-8/jre [18:36:50] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [18:36:50] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker [18:36:50] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [18:36:50] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [18:36:50] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [18:36:52] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557 [18:36:52] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc [18:36:52] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [18:36:52] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker [18:36:52] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker [18:36:52] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker [18:36:52] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main} [18:36:53] [Client thread/INFO]: Setting user: PassoDuplo [18:36:56] [Client thread/WARN]: Skipping bad option: lastServer: [18:36:56] [Client thread/INFO]: LWJGL Version: 2.9.4 [18:36:56] [Client thread/INFO] [FML]: -- System Details -- Details: Minecraft Version: 1.11.2 Operating System: Linux (amd64) version 4.9.32-31.lts Java Version: 1.8.0_121-solus, Oracle Corporation Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 70395504 bytes (67 MB) / 246304768 bytes (234 MB) up to 1060372480 bytes (1011 MB) JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: Loaded coremods (and transformers): GL info: ' Vendor: 'X.Org' Version: '3.0 Mesa 17.1.1' Renderer: 'Gallium 0.4 on AMD TONGA (DRM 3.8.0 / 4.9.32-31.lts, LLVM 4.0.0)' [18:36:56] [Client thread/INFO] [FML]: MinecraftForge v13.20.0.2345 Initialized [18:36:56] [Client thread/INFO] [FML]: Replaced 232 ore recipes [18:36:56] [Client thread/INFO] [FML]: Found 0 mods from the command line. Injecting into mod discoverer [18:36:56] [Client thread/INFO] [FML]: Searching /home/lucio/.minecraft/mods for mods [18:36:57] [Client thread/INFO] [mercurius_updater]: Mod mercurius_updater is missing the required element 'name'. Substituting mercurius_updater [18:36:58] [Client thread/INFO] [FML]: Forge Mod Loader has identified 5 mods to load [18:36:58] [Client thread/INFO] [FML]: Attempting connection with missing mods [minecraft, mcp, FML, forge, mercurius_updater] at CLIENT [18:36:58] [Client thread/INFO] [FML]: Attempting connection with missing mods [minecraft, mcp, FML, forge, mercurius_updater] at SERVER [18:36:58] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:mercurius_updater [18:36:58] [Client thread/INFO] [FML]: Processing ObjectHolder annotations [18:36:58] [Client thread/INFO] [FML]: Found 445 ObjectHolder annotations [18:36:58] [Client thread/INFO] [FML]: Identifying ItemStackHolder annotations [18:36:58] [Client thread/INFO] [FML]: Found 0 ItemStackHolder annotations [18:36:58] [Client thread/INFO] [FML]: Applying holder lookups [18:36:58] [Client thread/INFO] [FML]: Holder lookups applied [18:36:58] [Client thread/INFO] [FML]: Applying holder lookups [18:36:58] [Client thread/INFO] [FML]: Holder lookups applied [18:36:58] [Client thread/INFO] [FML]: Applying holder lookups [18:36:58] [Client thread/INFO] [FML]: Holder lookups applied [18:36:58] [Client thread/INFO] [FML]: Configured a dormant chunk cache size of 0 [18:36:58] [Forge Version Check/INFO] [ForgeVersionCheck]: [forge] Starting version check at http://files.minecraftforge.net/maven/net/minecraftforge/forge/promotions_slim.json [18:36:58] [Client thread/INFO] [mercurius]: Version Number exists, Using it: 1.11-1.0.5.21 [18:36:58] [Client thread/INFO] [mercurius]: File exists, Checking hash: /home/lucio/.minecraft/libraries/net/minecraftforge/Mercurius/1.11-1.0.5.21/Mercurius-1.11-1.0.5.21.jar [18:36:58] [Client thread/INFO] [mercurius]: Hash matches, Skipping download: 8f64062d704feac5cc00c68087df6d1890bdaf6f [18:36:58] [Client thread/INFO] [mercurius]: Mercurius Jar contains all signed files! Continueing loading! [18:36:58] [Client thread/INFO] [FML]: Applying holder lookups [18:36:58] [Client thread/INFO] [FML]: Holder lookups applied [18:36:58] [Client thread/INFO] [FML]: Injecting itemstacks [18:36:58] [Client thread/INFO] [FML]: Itemstack injection complete [18:36:59] [Sound Library Loader/INFO]: Starting up SoundSystem... [18:36:59] [Forge Version Check/INFO] [ForgeVersionCheck]: [forge] Found status: AHEAD Target: null [18:36:59] [Thread-8/INFO]: Initializing LWJGL OpenAL [18:36:59] [Thread-8/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) [18:36:59] [Thread-8/INFO]: OpenAL initialized. [18:36:59] [Thread-6/INFO] [FML]: Using sync timing. 200 frames of Display.update took 65166775 nanos [18:36:59] [Sound Library Loader/INFO]: Sound engine started [18:37:00] [Client thread/INFO] [FML]: Max texture size: 16384 [18:37:00] [Client thread/INFO]: Created: 16x16 textures-atlas [18:37:01] [Client thread/INFO] [FML]: Injecting itemstacks [18:37:01] [Client thread/INFO] [FML]: Itemstack injection complete [18:37:01] [Client thread/INFO] [FML]: Forge Mod Loader has successfully loaded 5 mods [18:37:01] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:mercurius_updater [18:37:01] [Client thread/INFO]: SoundSystem shutting down... [18:37:01] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com [18:37:01] [Sound Library Loader/INFO]: Starting up SoundSystem... [18:37:01] [Thread-11/INFO]: Initializing LWJGL OpenAL [18:37:01] [Thread-11/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) [18:37:01] [Thread-11/INFO]: OpenAL initialized. [18:37:02] [Sound Library Loader/INFO]: Sound engine started [18:37:02] [Client thread/INFO] [FML]: Max texture size: 16384 [18:37:02] [Client thread/INFO]: Created: 512x512 textures-atlas I always had to kill the game's process. Cpu usage was at 100% at one core.

It's on the first post

Since you understand it couldn't you explain me? After reading what NullPointerException I could only get that this code is pointing nowhere, but not why.

It is an old crash log since the game doesn't freeze when I put the item on the pendant inventory. It freezes when I am in the air falling. I could get a new crash log by killing the java proccess and it points to the line 54 -- setFlagMethod.invoke(player, 7, true); [15:50:55] [Client thread/INFO]: Setting user: Player231 [15:50:58] [Client thread/WARN]: Skipping bad option: lastServer: [15:50:58] [Client thread/INFO]: LWJGL Version: 2.9.4 [15:51:00] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:Baubles, FMLFileResourcePack:ElytraBb [15:51:02] [sound Library Loader/INFO]: Starting up SoundSystem... [15:51:03] [Thread-7/INFO]: Initializing LWJGL OpenAL [15:51:03] [Thread-7/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) [15:51:03] [Thread-7/INFO]: OpenAL initialized. [15:51:03] [sound Library Loader/INFO]: Sound engine started [15:51:04] [Client thread/INFO]: Created: 16x16 textures-atlas [15:51:05] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:Baubles, FMLFileResourcePack:ElytraBb [15:51:05] [Client thread/INFO]: SoundSystem shutting down... [15:51:06] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com [15:51:06] [sound Library Loader/INFO]: Starting up SoundSystem... [15:51:06] [Thread-9/INFO]: Initializing LWJGL OpenAL [15:51:06] [Thread-9/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) [15:51:06] [Thread-9/INFO]: OpenAL initialized. [15:51:06] [sound Library Loader/INFO]: Sound engine started [15:51:06] [Client thread/INFO]: Created: 1024x512 textures-atlas [15:51:08] [Client thread/WARN]: Skipping bad option: lastServer: [15:51:09] [Realms Notification Availability checker #1/INFO]: Could not authorize you against Realms server: Invalid session id [15:51:14] [server thread/INFO]: Starting integrated minecraft server version 1.10.2 [15:51:14] [server thread/INFO]: Generating keypair [15:51:14] [server thread/INFO]: Preparing start region for level 0 [15:51:15] [server thread/INFO]: Preparing spawn area: 30% [15:51:16] [server thread/INFO]: Changing view distance to 12, from 10 [15:51:17] [server thread/INFO]: Player231[local:E:5adee19d] logged in with entity id 358 at (-158.67645229317893, 64.92159999847412, 323.96597658775363) [15:51:17] [server thread/INFO]: Player231 joined the game [15:51:18] [server thread/INFO]: Saving and pausing game... [15:51:18] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Overworld [15:51:19] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Nether [15:51:19] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/The End [15:51:19] [pool-2-thread-1/WARN]: Couldn't look up profile properties for com.mojang.authlib.GameProfile@628cd6e2[id=0ef61a2a-d91b-37b4-a10d-af67b917d543,name=Player231,properties={},legacy=false] com.mojang.authlib.exceptions.AuthenticationException: The client has sent too many requests within a certain amount of time at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:65) ~[YggdrasilAuthenticationService.class:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillGameProfile(YggdrasilMinecraftSessionService.java:175) [YggdrasilMinecraftSessionService.class:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService$1.load(YggdrasilMinecraftSessionService.java:59) [YggdrasilMinecraftSessionService$1.class:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService$1.load(YggdrasilMinecraftSessionService.java:56) [YggdrasilMinecraftSessionService$1.class:?] at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195) [guava-17.0.jar:?] at com.google.common.cache.LocalCache.get(LocalCache.java:3934) [guava-17.0.jar:?] at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827) [guava-17.0.jar:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:165) [YggdrasilMinecraftSessionService.class:?] at net.minecraft.client.Minecraft.getProfileProperties(Minecraft.java:3060) [Minecraft.class:?] at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:131) [skinManager$3.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_101] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_101] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101] [15:51:27] [server thread/INFO]: [@: Given [Elytra] * 1 to Player231] [15:51:27] [Client thread/INFO]: [CHAT] [@: Given [Elytra] * 1 to Player231] [15:51:33] [server thread/ERROR]: Encountered an unexpected exception net.minecraft.util.ReportedException: Ticking player at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:210) ~[NetworkSystem.class:?] at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:806) ~[MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:687) ~[MinecraftServer.class:?] at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) ~[integratedServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:536) [MinecraftServer.class:?] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101] Caused by: java.lang.NullPointerException at mod.pdm.elytrabb.BaublesElytra.onWornTick(BaublesElytra.java:54) ~[baublesElytra.class:?] at baubles.common.event.EventHandlerEntity.playerTick(EventHandlerEntity.java:38) ~[EventHandlerEntity.class:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_9_EventHandlerEntity_playerTick_LivingUpdateEvent.invoke(.dynamic) ~[?:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:68) ~[ASMEventHandler.class:?] at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:159) ~[EventBus.class:?] at net.minecraftforge.common.ForgeHooks.onLivingUpdate(ForgeHooks.java:491) ~[ForgeHooks.class:?] at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:2136) ~[EntityLivingBase.class:?] at net.minecraft.entity.player.EntityPlayer.onUpdate(EntityPlayer.java:259) ~[EntityPlayer.class:?] at net.minecraft.entity.player.EntityPlayerMP.onUpdateEntity(EntityPlayerMP.java:341) ~[EntityPlayerMP.class:?] at net.minecraft.network.NetHandlerPlayServer.update(NetHandlerPlayServer.java:174) ~[NetHandlerPlayServer.class:?] at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.update(NetworkDispatcher.java:215) ~[NetworkDispatcher$1.class:?] at net.minecraft.network.NetworkManager.processReceivedPackets(NetworkManager.java:308) ~[NetworkManager.class:?] at net.minecraft.network.NetworkSystem.networkTick(NetworkSystem.java:195) ~[NetworkSystem.class:?] ... 5 more [15:51:33] [server thread/ERROR]: This crash report has been saved to: /home/lucio/Documentos/Java/Forge/run/./crash-reports/crash-2016-08-20_15.51.33-server.txt [15:51:33] [server thread/INFO]: Stopping server [15:51:33] [server thread/INFO]: Saving players [15:51:33] [server thread/INFO]: Saving worlds [15:51:33] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Overworld [15:51:33] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Nether [15:51:33] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/The End [15:52:02] [Client Shutdown Thread/INFO]: Stopping server And I had the same result by adding private void Fly(EntityPlayerMP p){ p.setElytraFlying(); } and replacing setFlagMethod.invoke(player, 7, true); with: Fly((EntityPlayerMP) player); -- It does the same thing but without reflection The game uses the same code to activate the elytra flying code. Look at net.minecraft.network.NetHandlerPlayServer on line 1031

Hmm... I think it's not a useful crash log. The game seems to not create a new one because it's actually freezing.

I am new with modding. Is it related to a client sided code?

Oh, yes. This is my last one: [12:53:53] [Client thread/INFO]: Setting user: Player127 [12:53:56] [Client thread/WARN]: Skipping bad option: lastServer: [12:53:56] [Client thread/INFO]: LWJGL Version: 2.9.4 [12:53:59] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:Baubles, FMLFileResourcePack:ElytraBb [12:54:01] [sound Library Loader/INFO]: Starting up SoundSystem... [12:54:01] [Thread-7/INFO]: Initializing LWJGL OpenAL [12:54:01] [Thread-7/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) [12:54:01] [Thread-7/INFO]: OpenAL initialized. [12:54:01] [sound Library Loader/INFO]: Sound engine started [12:54:02] [Client thread/INFO]: Created: 16x16 textures-atlas [12:54:03] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:Baubles, FMLFileResourcePack:ElytraBb [12:54:04] [Client thread/INFO]: SoundSystem shutting down... [12:54:04] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com [12:54:04] [sound Library Loader/INFO]: Starting up SoundSystem... [12:54:04] [Thread-9/INFO]: Initializing LWJGL OpenAL [12:54:04] [Thread-9/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) [12:54:04] [Thread-9/INFO]: OpenAL initialized. [12:54:04] [sound Library Loader/INFO]: Sound engine started [12:54:05] [Client thread/INFO]: Created: 1024x512 textures-atlas [12:54:06] [Client thread/WARN]: Skipping bad option: lastServer: [12:54:07] [Realms Notification Availability checker #1/INFO]: Could not authorize you against Realms server: Invalid session id [12:54:11] [server thread/INFO]: Starting integrated minecraft server version 1.10.2 [12:54:11] [server thread/INFO]: Generating keypair [12:54:11] [server thread/INFO]: Preparing start region for level 0 [12:54:12] [server thread/INFO]: Preparing spawn area: 25% [12:54:13] [server thread/INFO]: Changing view distance to 12, from 10 [12:54:15] [server thread/INFO]: Player127[local:E:32a76d41] logged in with entity id 360 at (-150.4123439768444, 65.41999998688698, 323.73730224811607) [12:54:15] [server thread/INFO]: Player127 joined the game [12:54:16] [server thread/INFO]: Saving and pausing game... [12:54:16] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Overworld [12:54:16] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Nether [12:54:16] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/The End [12:54:16] [pool-2-thread-1/WARN]: Couldn't look up profile properties for com.mojang.authlib.GameProfile@5cf90377[id=181bbcbe-77b5-3b29-b98c-87ba0992cbd8,name=Player127,properties={},legacy=false] com.mojang.authlib.exceptions.AuthenticationException: The client has sent too many requests within a certain amount of time at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:65) ~[YggdrasilAuthenticationService.class:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillGameProfile(YggdrasilMinecraftSessionService.java:175) [YggdrasilMinecraftSessionService.class:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService$1.load(YggdrasilMinecraftSessionService.java:59) [YggdrasilMinecraftSessionService$1.class:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService$1.load(YggdrasilMinecraftSessionService.java:56) [YggdrasilMinecraftSessionService$1.class:?] at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195) [guava-17.0.jar:?] at com.google.common.cache.LocalCache.get(LocalCache.java:3934) [guava-17.0.jar:?] at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4821) [guava-17.0.jar:?] at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4827) [guava-17.0.jar:?] at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:165) [YggdrasilMinecraftSessionService.class:?] at net.minecraft.client.Minecraft.getProfileProperties(Minecraft.java:3060) [Minecraft.class:?] at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:131) [skinManager$3.class:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_101] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_101] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101] [12:54:20] [server thread/INFO]: Player127 has just earned the achievement [Taking Inventory] [12:54:20] [Client thread/INFO]: [CHAT] Player127 has just earned the achievement [Taking Inventory] [12:54:43] [server thread/INFO]: [Player127: Given [Elytra] * 1 to Player127] [12:54:43] [Client thread/INFO]: [CHAT] Given [Elytra] * 1 to Player127 [12:54:51] [server thread/INFO]: Stopping server [12:54:51] [server thread/INFO]: Saving players [12:54:51] [server thread/INFO]: Saving worlds [12:54:51] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Overworld [12:54:51] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/Nether [12:54:51] [server thread/INFO]: Saving chunks for level 'Mundo Teste'/The End [12:54:52] [Client thread/FATAL]: Reported exception thrown! net.minecraft.util.ReportedException: Ticking entity at net.minecraft.world.World.updateEntities(World.java:1899) ~[World.class:?] at net.minecraft.client.Minecraft.runTick(Minecraft.java:1886) ~[Minecraft.class:?] at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1118) ~[Minecraft.class:?] at net.minecraft.client.Minecraft.run(Minecraft.java:406) [Minecraft.class:?] at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101] at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?] at GradleStart.main(GradleStart.java:26) [start/:?] Caused by: java.lang.ClassCastException: net.minecraft.client.entity.EntityPlayerSP cannot be cast to net.minecraft.entity.player.EntityPlayerMP at mod.pdm.elytrabb.BaublesElytra.onWornTick(BaublesElytra.java:67) ~[baublesElytra.class:?] at baubles.common.event.EventHandlerEntity.playerTick(EventHandlerEntity.java:38) ~[EventHandlerEntity.class:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_9_EventHandlerEntity_playerTick_LivingUpdateEvent.invoke(.dynamic) ~[?:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:68) ~[ASMEventHandler.class:?] at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:159) ~[EventBus.class:?] at net.minecraftforge.common.ForgeHooks.onLivingUpdate(ForgeHooks.java:491) ~[ForgeHooks.class:?] at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:2136) ~[EntityLivingBase.class:?] at net.minecraft.entity.player.EntityPlayer.onUpdate(EntityPlayer.java:259) ~[EntityPlayer.class:?] at net.minecraft.client.entity.EntityPlayerSP.onUpdate(EntityPlayerSP.java:210) ~[EntityPlayerSP.class:?] at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2106) ~[World.class:?] at net.minecraft.world.World.updateEntity(World.java:2073) ~[World.class:?] at net.minecraft.world.World.updateEntities(World.java:1886) ~[World.class:?] ... 16 more

That's because my computer also crashes But I think it's a linux issue with the mouse / keyboard

I want to make another elytra, but an elytra which is used on baubles's pendant inventory. After looking for a while the minecraft code I found out that to make the player use the elytra, this flag needs to be active, but, as said on the title, the game crashes when this code is executed. Why does it happen? My item's code: package mod.pdm.elytrabb; import baubles.api.BaubleType; import baubles.api.IBauble; import baubles.common.container.InventoryBaubles; import baubles.common.lib.PlayerHandler; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.util.logging.Level; import java.util.logging.Logger; import net.minecraft.entity.EntityLivingBase; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.init.SoundEvents; import net.minecraft.item.ItemElytra; import net.minecraft.item.ItemStack; import net.minecraft.util.ActionResult; import net.minecraft.util.EnumActionResult; import net.minecraft.util.EnumHand; import net.minecraft.world.World; /** * * @author PassoDuplo */ public class BaublesElytra extends ItemElytra implements IBauble{ private Method setFlagMethod; public BaublesElytra(){ super(); this.setUnlocalizedName("elytra"); this.setRegistryName("elytra"); try { setFlagMethod = Class.forName("net.minecraft.entity.EntityLivingBase").getDeclaredMethod("setFlag"); setFlagMethod.setAccessible(true); } catch(ClassNotFoundException ex){ Logger.getLogger(BaublesElytra.class.getName()).log(Level.SEVERE, null, ex); } catch (NoSuchMethodException ex) { Logger.getLogger(BaublesElytra.class.getName()).log(Level.SEVERE, null, ex); } catch (SecurityException ex) { Logger.getLogger(BaublesElytra.class.getName()).log(Level.SEVERE, null, ex); } } @Override public BaubleType getBaubleType(ItemStack i){ return BaubleType.AMULET; } @Override public void onWornTick(ItemStack itemstack, EntityLivingBase player){ if(!player.isElytraFlying() && player.motionY < 0.0D && !player.isInLava() && !player.isInWater() && !player.onGround){ try { setFlagMethod.invoke(player, 7, true); } catch (IllegalAccessException ex) { Logger.getLogger(BaublesElytra.class.getName()).log(Level.SEVERE, null, ex); } catch (IllegalArgumentException ex) { Logger.getLogger(BaublesElytra.class.getName()).log(Level.SEVERE, null, ex); } catch (InvocationTargetException ex) { Logger.getLogger(BaublesElytra.class.getName()).log(Level.SEVERE, null, ex); } } } @Override public void onEquipped(ItemStack itemstack, EntityLivingBase player){ player.playSound(SoundEvents.ITEM_ARMOR_EQUIP_LEATHER, 1.0F, 1.0F); } @Override public void onUnequipped(ItemStack itemstack, EntityLivingBase player){} @Override public boolean canEquip(ItemStack itemstack, EntityLivingBase player) { return true; } @Override public boolean canUnequip(ItemStack itemstack, EntityLivingBase player) { return true; } @Override public ActionResult<ItemStack> onItemRightClick(ItemStack i, World w, EntityPlayer p, EnumHand h){ InventoryBaubles baubles = PlayerHandler.getPlayerBaubles(p); if (null == baubles.getStackInSlot(0)) { baubles.setInventorySlotContents(0, i.copy()); onEquipped(i,p); i.stackSize = 0; return new ActionResult(EnumActionResult.SUCCESS, i); } else { return new ActionResult(EnumActionResult.FAIL, i); } } }