You can download the ChangeMan DS 5.5.0 plug-in for Application Developer 5.1 from the Download Center of eSupport at: Product > ChangeMan DS > Release 5.5.0 > wsad5 > eclipse2.1.
The location of the IBM WebSphere Studio Application Developer 5.0/Eclipse 2 installation is required during this install. This is the parent directory of the "eclipse" directory in the WebSphere Studio or Eclipse 2 installation. e.g. C:\Program Files\IBM\WebSphere Studio This location is checked for compatibility by confirming the presence of an Eclipse 2 specific file under the specified location.
SRVE0068E: Uncaught exception created in one of the service methods of the servlet ZMFConnectServices in application zmfws_war_8.2.0. Exception created : java.lang.UnsupportedClassVersionError: JVMCFRE003 bad major version; class=com/serena/sercmn/zmf/sernet/SernetSession,