Hi, I have installed a JBoss application on Solaris 10, the same deployment works fine on Linux, AIX. I am now getting this NoClassDef Exception when I can clearly see that the class is located in the spring-core.jar file that is in the server/default/lib folder and is also located in the jboss-spring.deployer package that is in the deploy directory. I can't figure out why I am getting this NoClassDef Exception when deploying on Solaris. I am using JBoss 4.0.4 I am using a spring-deployer version of 1.2 because I need to remain compatible with 1.4 JVM. However in this particular example, the JVM's for both Linux and solaris are 1.5. The error is below INFO | jvm 1 | 2008/06/20 15:58:12 | --- Incompletely deployed packages --- INFO | jvm 1 | 2008/06/20 15:58:12 | org.jboss.deployment.DeploymentInfo@548a161b { url=file:/usr/local/jboss/server/default/deploy/Authentication.spring/ } INFO | jvm 1 | 2008/06/20 15:58:12 | deployer: org.jboss.spring.deployment.SpringApplicationContextDeployer@15bfdbd INFO | jvm 1 | 2008/06/20 15:58:12 | status: Deployment FAILED reason: org/springframework/core/io/support/ResourcePatternResolver INFO | jvm 1 | 2008/06/20 15:58:12 | state: FAILED INFO | jvm 1 | 2008/06/20 15:58:12 | watch: file:/usr/local/jboss/server/default/deploy/Authentication.spring/ INFO | jvm 1 | 2008/06/20 15:58:12 | altDD: null INFO | jvm 1 | 2008/06/20 15:58:12 | lastDeployed: 1213991864100 INFO | jvm 1 | 2008/06/20 15:58:12 | lastModified: 1213961722000 INFO | jvm 1 | 2008/06/20 15:58:12 | mbeans: INFO | jvm 1 | 2008/06/20 15:58:12 | INFO | jvm 1 | 2008/06/20 15:58:12 | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4159667#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...