2012-06-11 06:30:32 [SEVERE] java.io.FileNotFoundException: ./world/region/r.2.-2.mca (Too many open files)
2012-06-11 06:30:32 [SEVERE] 	at java.io.RandomAccessFile.open(Native Method)
2012-06-11 06:30:32 [SEVERE] 	at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.RegionFile.<init>(SourceFile:98)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.RegionFileCache.a(SourceFile:65)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.RegionFileCache.c(SourceFile:95)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:136)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.c(ChunkRegionLoader.java:126)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.b(SourceFile:29)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.run(SourceFile:22)
2012-06-11 06:30:32 [SEVERE] 	at java.lang.Thread.run(Thread.java:679)
2012-06-11 06:30:32 [SEVERE] java.lang.NullPointerException
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.RegionFile.a(SourceFile:292)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkBuffer.close(SourceFile:262)
2012-06-11 06:30:32 [SEVERE] 	at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:166)
2012-06-11 06:30:32 [SEVERE] 	at java.io.FilterOutputStream.close(FilterOutputStream.java:160)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:139)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.c(ChunkRegionLoader.java:126)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.b(SourceFile:29)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.run(SourceFile:22)
2012-06-11 06:30:32 [SEVERE] 	at java.lang.Thread.run(Thread.java:679)
2012-06-11 06:30:32 [SEVERE] java.lang.NullPointerException
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.RegionFile.a(SourceFile:292)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkBuffer.close(SourceFile:262)
2012-06-11 06:30:32 [SEVERE] 	at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:166)
2012-06-11 06:30:32 [SEVERE] 	at java.io.FilterOutputStream.close(FilterOutputStream.java:160)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:139)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.c(ChunkRegionLoader.java:126)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.b(SourceFile:29)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.run(SourceFile:22)
2012-06-11 06:30:32 [SEVERE] 	at java.lang.Thread.run(Thread.java:679)
2012-06-11 06:30:32 [SEVERE] java.lang.NullPointerException
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.RegionFile.a(SourceFile:292)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkBuffer.close(SourceFile:262)
2012-06-11 06:30:32 [SEVERE] 	at java.util.zip.DeflaterOutputStream.close(DeflaterOutputStream.java:166)
2012-06-11 06:30:32 [SEVERE] 	at java.io.FilterOutputStream.close(FilterOutputStream.java:160)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.a(ChunkRegionLoader.java:139)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.ChunkRegionLoader.c(ChunkRegionLoader.java:126)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.b(SourceFile:29)
2012-06-11 06:30:32 [SEVERE] 	at net.minecraft.server.FileIOThread.run(SourceFile:22)
2012-06-11 06:30:32 [SEVERE] 	at java.lang.Thread.run(Thread.java:679)
2012-06-11 06:30:32 [SEVERE] java.lang.NullPointerException