Hei Leute!
Ich brauche ganz schnell eure Hilfe und zwar hab ich einen Problem beim Joinen...Und un 50 Minuten sollte ich Event leiten 
Ich kopiere einfahc den Log hier rein:
[18:10:07] [Client thread/INFO]: Setting user: zizou26
[18:10:08] [Client thread/INFO]: LWJGL Version: 2.9.4
[18:10:08] [Client thread/INFO]: Reloading ResourceManager: Default
[18:10:08] [Sound Library Loader/INFO]: Starting up SoundSystem...
[18:10:09] [Thread-5/INFO]: Initializing LWJGL OpenAL
[18:10:09] [Thread-5/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[18:10:09] [Thread-5/INFO]: OpenAL initialized.
[18:10:09] [Sound Library Loader/INFO]: Sound engine started
[18:10:09] [Client thread/INFO]: Created: 1024x512 textures-atlas
[18:10:15] [Client thread/INFO]: Connecting to server.cubeside.de, 25565
[18:10:16] [Client thread/INFO]: [CHAT] zizou26 joined the game.
[18:10:16] [Client thread/INFO]: [CHAT]
[18:10:16] [Client thread/INFO]: [CHAT]
[18:10:16] [Client thread/INFO]: [CHAT] Willkommen auf Cubeside, zizou26!
[18:10:16] [Client thread/INFO]: [CHAT] Unsere Homepage erreichst du unter http://www.cubeside.de
[18:10:16] [Client thread/INFO]: [CHAT] Im Teamspeak3 sind wir anzutreffen unter cubeside.de
[18:10:16] [Client thread/INFO]: [CHAT] Fuer Serverfragen empfehlen wir http://wiki.cubeside.de/
[18:10:16] [Client thread/INFO]: [CHAT] Eine schnell Hilfe findest du mit /help
[18:10:16] [Client thread/INFO]: [CHAT]
[18:10:16] [Client thread/INFO]: [CHAT]
[18:10:16] [Client thread/INFO]: [CHAT]
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffcc09f2177, pid=4624, tid=4772
#
# JRE version: Java(TM) SE Runtime Environment (8.0_91-b15) (build 1.8.0_91-b15)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.91-b15 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C [ig75icd64.dll+0x12177]
#
# 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\Jean\AppData\Roaming\.minecraft\hs_err_pid4624.log
#
# 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
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
Bin gerade auf der Suche, falls ihr schneller seid, dann sehr gerne! 
MfG
zizou
Keine Ahnung warum, scheint aber zu funktionnieren 