Just installed latest from trunk.
I run mergesegs and I get the following error in all tasks log files (I use default log4j.properties): log4j:ERROR setFile(null,true) call failed. java.io.FileNotFoundException: / (Is a directory) at java.io.FileOutputStream.openAppend(Native Method) at java.io.FileOutputStream.(FileOutputStream.java:177) at java.io.FileOutputStream.(FileOutputStream.java:102) at org.apache.log4j.FileAppender.setFile(FileAppender.java:289) at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:163) at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAp pender.java:215) at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:256) at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:132 ) at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:96) at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.jav a:654) at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.jav a:612) at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigur ator.java:509) at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java: 415) at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java: 441) at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter. java:468) at org.apache.log4j.LogManager.(LogManager.java:122) at org.apache.log4j.Logger.getLogger(Logger.java:104) at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:229) at org.apache.commons.logging.impl.Log4JLogger.(Log4JLogger.java:65) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAcces sorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstruc torAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.ja va:529) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.ja va:235) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:370) at org.apache.hadoop.mapred.TaskTracker.(TaskTracker.java:59) at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1346) log4j:ERROR Either File or DatePattern options are not set for appender [DRFA].