These past few days I’ve been having issues with getting one of our Web Archive files to deploy on anything other than Red Hat Enterprise Linux or Debian. Resin would mysteriously throw an AbstractMethodError exception on certain Linux systems, even while the same web archive loaded perfectly on others. I’m not sure exactly why this happens, but one solution is to move all of the Apache Struts jars and log4j jar files into the global Resin classpath. It also seems that I’m not the only one having difficulties with Struts and Resin.