Help Weird Error

I currently get this error on my server, and everyone disconnects:

15:20:39 [SEVERE] java.net.SocketException: Software caused connection abort: so
cket write error
15:20:39 [SEVERE] at java.net.SocketOutputStream.socketWrite0(Native Metho
d)
15:20:39 [SEVERE] at java.net.SocketOutputStream.socketWrite(Unknown Sourc
e)
15:20:39 [SEVERE] at java.net.SocketOutputStream.write(Unknown Source)
15:20:39 [SEVERE] at java.io.DataOutputStream.writeByte(Unknown Source)
15:20:39 [SEVERE] at net.minecraft.server.Packet33RelEntityMoveLook.a(Sour
ceFile:32)
15:20:39 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:121)
15:20:39 [SEVERE] at net.minecraft.server.NetworkManager.e(NetworkManager.
java:96)
15:20:39 [SEVERE] at net.minecraft.server.NetworkManager.d(NetworkManager.
java:230)
15:20:39 [SEVERE] at net.minecraft.server.NetworkWriterThread.run(SourceFi
le:90)
15:20:39 [INFO] muffincakes31 lost connection: disconnect.endOfStream
15:20:47 [INFO] Connection reset
15:20:47 [SEVERE] java.net.SocketException: Software caused connection abort: so
cket write error
15:20:47 [SEVERE] at java.net.SocketOutputStream.socketWrite0(Native Metho
d)
15:20:47 [SEVERE] at java.net.SocketOutputStream.socketWrite(Unknown Sourc
e)
15:20:47 [SEVERE] at java.net.SocketOutputStream.write(Unknown Source)
15:20:47 [SEVERE] at java.io.DataOutputStream.write(Unknown Source)
15:20:47 [SEVERE] at net.minecraft.server.Packet.a(Packet.java:120)
15:20:47 [SEVERE] at net.minecraft.server.NetworkManager.e(NetworkManager.
java:107)
15:20:47 [SEVERE] at net.minecraft.server.NetworkManager.d(NetworkManager.
java:230)
15:20:47 [SEVERE] at net.minecraft.server.NetworkWriterThread.run(SourceFi
le:90)

What does it mean?

 

Software caused connection abort

reinstall MC