Unable to play minecraft, when i logged into a server it crashed and said exit code 255... i have tried deleting {explorer %USERPROFILE%\AppData\Roaming\.minecraft} and also reinstalled minecraft and java. please help also it says exit code 1 sometimes Error executing task on Client java.lang.IllegalStateException: Invalid entity data item type for field 6 on entity aty['Primed TNT'/7822332, l='MpServer', x=-10.53, y=68.00, z=-0.63]: old=STANDING(class ajh), new=80(class java.lang.Integer) at qn.a(SourceFile:252) at qn.a(SourceFile:239) at dkc.a(SourceFile:547) at mt.a(SourceFile:42) at mt.a(SourceFile:11) at ke.a(SourceFile:21) at ke$$Lambda$1801/655667583.run(Unknown Source) at agq.h(SourceFile:144) at agu.h(SourceFile:23) at agq.q(SourceFile:118) at agq.bh(SourceFile:103) at cyc.e(SourceFile:915) at cyc.b(SourceFile:410) at net.minecraft.client.main.Main.main(SourceFile:155) 18:58:09.468 # # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000018006ad95, pid=3544, tid=4092 # # JRE version: Java(TM) SE Runtime Environment (8.0_51-b16) (build 1.8.0_51-b16) # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.51-b03 mixed mode windows-amd64 compressed oops) # Problematic frame: # C [ig7icd64.dll+0x6ad95] # # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows # # An error report file with more information is saved as: # C:\Users\Green\AppData\Roaming\.minecraft\hs_err_pid3544.log Compiled method (c1) 58792 10509 3 com.mojang.blaze3d.platform.GLX::glBindBuffer (20 bytes)  total in heap [0x0000000002c07110,0x0000000002c075c0] = 1200  relocation [0x0000000002c07230,0x0000000002c07288] = 88  main code [0x0000000002c072a0,0x0000000002c07440] = 416  stub code [0x0000000002c07440,0x0000000002c074f8] = 184  oops [0x0000000002c074f8,0x0000000002c07500] = 8  metadata [0x0000000002c07500,0x0000000002c07510] = 16  scopes data [0x0000000002c07510,0x0000000002c07558] = 72  scopes pcs [0x0000000002c07558,0x0000000002c075b8] = 96  dependencies [0x0000000002c075b8,0x0000000002c075c0] = 8 # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. # AL lib: (EE) alc_cleanup: 1 device not closed 18:58:09.468 Process crashed with exit code 1