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I deleted the level.dat and the other level info. I kept everything else and allowed the server to run. I fear that the world is corrupted beyond repair, which would suck due to the time put into it.. But, I was hoping for professional assistance, the crash log is:

---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 5/28/15 12:07 PM
Description: Watching Server

java.lang.Error
at amy.g(SourceFile:431)
at adm.p(SourceFile:659)
at ahs.b(SourceFile:108)
at afh.a(SourceFile:445)
at le.h(SourceFile:383)
at le.c(SourceFile:202)
at net.minecraft.server.MinecraftServer.B(SourceFile:599)
at ko.B(SourceFile:299)
at net.minecraft.server.MinecraftServer.A(SourceFile:535)
at net.minecraft.server.MinecraftServer.run(SourceFile:451)
at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at amy.g(SourceFile:431)
at adm.p(SourceFile:659)
at ahs.b(SourceFile:108)
at afh.a(SourceFile:445)
at le.h(SourceFile:383)
at le.c(SourceFile:202)
at net.minecraft.server.MinecraftServer.B(SourceFile:599)
at ko.B(SourceFile:299)
at net.minecraft.server.MinecraftServer.A(SourceFile:535)

-- Thread Dump --
Details:
Threads: "Netty Server IO #1" Id=27 RUNNABLE
at net.minecraft.server.MinecraftServer.a(SourceFile:1275)
- locked [email protected]
at net.minecraft.server.MinecraftServer.a(SourceFile:1291)
at le.a(SourceFile:978)
at fh.a(SourceFile:10)
at lm.a(SourceFile:695)
at iy.a(SourceFile:22)
at iy.a(SourceFile:8)
at ek.a(SourceFile:125)
...

"File IO Thread" Id=37 TIMED_WAITING
at java.lang.Thread.sleep(Native Method)
at auc.c(SourceFile:51)
at auc.run(SourceFile:30)
at java.lang.Thread.run(Unknown Source)

"Server Watchdog" Id=35 RUNNABLE
at sun.management.ThreadImpl.dumpThreads0(Native Method)
at sun.management.ThreadImpl.dumpAllThreads(Unknown Source)
at kp.run(SourceFile:43)
at java.lang.Thread.run(Unknown Source)

"Netty Server IO #0" Id=26 RUNNABLE (in native)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)
- locked [email protected]
- locked [email protected]
- locked [email protected]
at sun.nio.ch.SelectorImpl.select(Unknown Source)
at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310)
...

"D3D Screen Updater" Id=23 WAITING on [email protected]
at java.lang.Object.wait(Native Method)
- waiting on [email protected]
at sun.java2d.d3d.D3DScreenUpdateManager.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

"DestroyJavaVM" Id=22 RUNNABLE

"Server thread" Id=20 RUNNABLE
at amy.g(SourceFile:431)
at adm.p(SourceFile:659)
at ahs.b(SourceFile:108)
at afh.a(SourceFile:445)
at le.h(SourceFile:383)
at le.c(SourceFile:202)
at net.minecraft.server.MinecraftServer.B(SourceFile:599)
at ko.B(SourceFile:299)
...

"TimerQueue" Id=18 TIMED_WAITING on java.u[email protected]3e11a5
at sun.misc.Unsafe.park(Native Method)
- waiting on java.u[email protected]3e11a5
at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source)
at java.util.concurrent.DelayQueue.take(Unknown Source)
at javax.swing.TimerQueue.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Number of locked synchronizers = 1
- [email protected]

"Thread-4" Id=17 WAITING on java.u[email protected]189ea10
at sun.misc.Unsafe.park(Native Method)
- waiting on java.u[email protected]189ea10
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.util.concurrent.LinkedBlockingQueue.take(Unknown Source)
at com.mojang.util.QueueLogAppender.getNextLogEvent(QueueLogAppender.java:77)
at kr$4.run(SourceFile:114)
at java.lang.Thread.run(Unknown Source)

"AWT-EventQueue-0" Id=16 WAITING on java.u[email protected]131f2e9
at sun.misc.Unsafe.park(Native Method)
- waiting on java.u[email protected]131f2e9
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.awt.EventQueue.getNextEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
...

"AWT-Windows" Id=14 RUNNABLE (in native)
at sun.awt.windows.WToolkit.eventLoop(Native Method)
at sun.awt.windows.WToolkit.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

"AWT-Shutdown" Id=13 WAITING on [email protected]
at java.lang.Object.wait(Native Method)
- waiting on [email protected]
at java.lang.Object.wait(Unknown Source)
at sun.awt.AWTAutoShutdown.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

"Java2D Disposer" Id=12 WAITING on [email protected]
at java.lang.Object.wait(Native Method)
- waiting on [email protected]
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at sun.java2d.Disposer.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

"Server Infinisleeper" Id=11 TIMED_WAITING
at java.lang.Thread.sleep(Native Method)
at ko$1.run(SourceFile:65)

"Snooper Timer" Id=10 TIMED_WAITING on [email protected]
at java.lang.Object.wait(Native Method)
- waiting on [email protected]
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)

"Attach Listener" Id=5 RUNNABLE

"Signal Dispatcher" Id=4 RUNNABLE

"Finalizer" Id=3 WAITING on [email protected]
at java.lang.Object.wait(Native Method)
- waiting on [email protected]
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)

"Reference Handler" Id=2 WAITING on [email protected]
at java.lang.Object.wait(Native Method)
- waiting on [email protected]
at java.lang.Object.wait(Unknown Source)
at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)

Stacktrace:
at kp.run(SourceFile:59)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.8.6
Operating System: Windows 8.1 (x86) version 6.3
CPU: 4x AMD A6-5200 APU with Radeon(TM) HD Graphics
Java Version: 1.8.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 146591952 bytes (139 MB) / 259522560 bytes (247 MB) up to 259522560 bytes (247 MB)
JVM Flags: 0 total;
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Profiler Position: N/A (disabled)
Player Count: 1 / 20; [lf['StevethePikmin'/266, l='world', x=-236.63, y=61.00, z=465.45]]
Is Modded: Unknown (can't tell)
Type: Dedicated Server (map_server.txt)