I googled but can't see any pointers as to what it's missing. Tried 2 different files and I get the same problem. # rpm -qa|grep java java-binfmt-misc-1.03-8.8.x86_64 java-1_6_0-sun-1.6.0.u20-1.15.x86_64 gcc44-java-4.4.2_20100116-1.2.x86_64 netbeans-javaparser-6.8-1.1.noarch gcc45-java-4.5.0_20100604-1.1.x86_64 ant-javadoc-1.7.1-11.1.noarch javahelp2-2.0.05-6.28.noarch timezone-java-2010h-1.1.noarch ooobasis-dev3.2-javafilter-3.2.0-9432.i586 gcc43-java-4.3.4_20091019-2.25.x86_64 gcc-java-4.5-5.2.x86_64 java-ca-certificates-1-5.1.noarch ooobasis3.2-javafilter-3.2.0-9483.x86_64 java-1_6_0-sun-devel-1.6.0.u20-1.15.x86_64 # java -jar RXTXcomm.jar Failed to load Main-Class manifest attribute from RXTXcomm.jar slipstream:/home/lancelot/ftp/Jun10/RXTX/rxtx-devel # java -jar ../../org-mc4j-ems-1.2.2.jar Failed to load Main-Class manifest attribute from ../../org-mc4j-ems-1.2.2.jar slipstream:/home/lancelot/ftp/Jun10/RXTX/rxtx-devel # l /usr/bin/java lrwxrwxrwx 1 root root 22 2009-04-18 13:07 /usr/bin/java -> /etc/alternatives/java* slipstream:/home/lancelot/ftp/Jun10/RXTX/rxtx-devel # l /etc/alternatives/java lrwxrwxrwx 1 root root 37 2010-05-14 00:39 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.6.0-sun/bin/java* Help appreciated. Regards Sid. -- Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support Specialist, Cricket Coach Microsoft Windows Free Zone - Linux used for all Computing Tasks -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-factory+help@opensuse.org