Hi, > $ ant -v > Apache Ant version 1.7.1 compiled on April 16 2010 > Buildfile: build.xml > Detected Java version: 1.5 in: /usr/lib/jvm/java-1.5.0-sun-1.5.0.22/jre > Detected OS: Linux > > BUILD FAILED > java.lang.UnsupportedClassVersionError: Bad version number in .class file On Fedora 12 x86_64 with OpenJDK I get: $ ant -v Apache Ant version 1.7.1 compiled on August 13 2009 Buildfile: build.xml does not exist! Build failed and looking in ant.jar, I see, for example: $ file org/apache/tools/ant/BuildEvent.class org/apache/tools/ant/BuildEvent.class: compiled Java class data, version 46.0 (Java 1.2) so it doesn't look like the bytecode is too new. I suggest trying to get more information which class is causing the UnsupportedClassVersionError and/or looking at all .class files in /usr/share/java/ant.jar (and/or the other ant JARs). Andrew -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines