This comes up when I try to turn on my server. Code: at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log 4jContextFactory.java:85) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log 4jContextFactory.java:34) at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:387) at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:322) at net.minecraft.server.v1_7_R1.MinecraftServer.<clinit>(MinecraftServer .java:46) at org.bukkit.craftbukkit.Main.main(Main.java:152) Caused by: java.lang.IllegalStateException: Unable to create a manager at org.apache.logging.log4j.core.appender.AbstractManager.getManager(Abs tractManager.java:73) at org.apache.logging.log4j.core.appender.OutputStreamManager.getManager (OutputStreamManager.java:65) at org.apache.logging.log4j.core.appender.rolling.RollingRandomAccessFil eManager.getRollingRandomAccessFileManager(RollingRandomAccessFileManager.java:6 2) at org.apache.logging.log4j.core.appender.RollingRandomAccessFileAppende r.createAppender(RollingRandomAccessFileAppender.java:196) ... 18 more 2014-01-02 00:40:52,703 ERROR Null object returned for RollingRandomAccessFile i n Appenders