I just did an svn update and tried to do a build. It failed with: [INFO] Compiling 58 source files to /Users/rgoers/projects/logback/ trunk/logback-examples/target/classes [INFO] ------------------------------------------------------------------------ [ERROR] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Compilation failure /Users/rgoers/projects/logback/trunk/logback-examples/src/main/java/ chapter4/ExitWoes1.java:[37,44] cannot find symbol symbol : variable ROOT_NAME location: class ch.qos.logback.classic.LoggerContext /Users/rgoers/projects/logback/trunk/logback-examples/src/main/java/ chapter4/ExitWoes2.java:[38,44] cannot find symbol symbol : variable ROOT_NAME location: class ch.qos.logback.classic.LoggerContext