---- Minecraft Crash Report ---- // Why is it breaking :( Time: 5/9/17 3:20 PM Description: Exception in server tick loop java.lang.NullPointerException: Exception in server tick loop at gw.a(SourceFile:18) at i.<init>(SourceFile:54) at i$a.a(SourceFile:170) at j.a(SourceFile:65) at ng.a(SourceFile:74) at ng.<init>(SourceFile:66) at ob.b(SourceFile:162) at cgl.a(SourceFile:98) at cgl.j(SourceFile:130) at net.minecraft.server.MinecraftServer.run(SourceFile:436) at java.lang.Thread.run(Unknown Source) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details: Minecraft Version: 17w18b Operating System: Windows 7 (amd64) version 6.1 Java Version: 1.8.0_131, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 170354176 bytes (162 MB) / 293728256 bytes (280 MB) up to 1060372480 bytes (1011 MB) JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 Profiler Position: N/A (disabled) Player Count: 0 / 8; [] Type: Integrated Server (map_client.txt) Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.