java.lang.NoClassDefFoundError

Hello friends,

This is Trinadh, I’m new to wM. When i’m starting my IS server, getting an error.

2013-10-15 23:04:31 IST [ISS.0014.0054C] Error occurred while initializing serve
r: java.lang.NoClassDefFoundError: com/tangosol/util/MapListener at com.w
ebmethods.sc.caching.WmCacheFactory.createLocalCache(WmCacheFactory.java:184)
at com.wm.app.b2b.server.SessionManager.openSessionStore(SessionManager.java:274
) at com.wm.app.b2b.server.SessionManager.(SessionManager.java:102)
at com.wm.app.b2b.server.SessionManager.create(SessionManager.java:82) at com.w
m.app.b2b.server.StateManager.init(StateManager.java:26) at com.wm.app.b2
b.server.Server.run(Server.java:388)

And also i’m attaching console screen shot. Please provide me a solution for this.
ErrorNoClassDefFound.bmp (2.25 MB)

the jar should be under:
\common\lib\ext\tangosol.jar
check if it’s there. You may need to reinstall IS