[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project mod_cluster-core: Compilation failure
[ERROR] E:\OpenSource\mod_cluster_trunk\core\src\main\java\org\jboss\modcluster\mcmp\impl\DefaultMCMPResponseParser.java:[30,-1] cannot access org.jboss.logging.Logger
[ERROR] bad class file: C:\Users\UserName\.m2\repository\org\jboss\logging\jboss-logging\3.0.1.GA\jboss-logging-3.0.1.GA.jar(org/jboss/logging/Logger.class)
[ERROR] class file has wrong version 50.0, should be 49.0
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :mod_cluster-core
E:\OpenSource\mod_cluster_trunk>
Would you help me to find the reason?