I have read the previous post titled wake up device problem although that was for 10.2.2 and I am on 10.3 so the patch does't help me here. This is the error reported in the zcc.log:

28 Apr 2010 17:14:44 BaseDeviceList......347 :Inside WOL menuitemclick selected devices 184af0bd339c4dcba5b3bf543b72dc2dWorkstation
28 Apr 2010 17:14:57 WakeOnLanOptionsDi..516 :BroadcastAddressList:[] ServersList :[4710beca6c94e8b0dd12595a971759b9] Retry :1 Timeout :2
28 Apr 2010 17:14:57 WakeOnLanUtil........42 :Failed to wake up devicecom.novell.zenworks.wol.WOLException: com.novell.zenworks.datamodel.exceptions.ObjectNot FoundException: 9975e1e86387c70df86e56110daef678
28 Apr 2010 17:14:57 MessageUtil..........85 :Error: Failed to Wake up device
28 Apr 2010 17:14:57 ============== Exception (begin) ===========================
28 Apr 2010 17:14:57 Exception occured
com.novell.zenworks.wol.WOLException: com.novell.zenworks.datamodel.exceptions.ObjectNot FoundException: 9975e1e86387c70df86e56110daef678
at com.novell.zenworks.wol.WakeOnLanDirectImpl.getTyp es(WakeOnLanDirectImpl.java:178)
at com.novell.zenworks.wol.WakeOnLanDirectImpl.addWOL StatusQuickTaskToQueue(WakeOnLanDirectImpl.java:14 1)
at com.novell.zenworks.admin.pages.devices.wakeOnLan. WakeOnLanUtil.wakeUpDevices(WakeOnLanUtil.java:31)
at com.novell.zenworks.admin.pages.devices.wakeOnLan. WakeOnLanOptionsDialog.wolOkButton_click(WakeOnLan OptionsDialog.java:518)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at com.novell.web.controls.WebControl.fireEvent(WebCo ntrol.java:1977)
at com.novell.web.controls.WebControl.fireEvent(WebCo ntrol.java:1952)
at com.novell.web.controls.Button.raisePostBackEvent( Button.java:475)
at com.novell.web.controls.Page.raisePostBackEvent(Pa ge.java:885)
at com.novell.web.controls.Page.raisePostBackEvents(P age.java:872)
at com.novell.web.controls.Page.internalProcessReques t(Page.java:584)
at com.novell.web.controls.Page.processRequest(Page.j ava:528)
at com.novell.zenworks.fw.web.internal.layout.Index.p rocessRequest(Index.java:518)
at com.novell.web.internal.controls.PageTag.doEndTag( PageTag.java:86)
at org.apache.jsp.jsp.index_jsp._jspService(index_jsp .java:178)
at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:328)
at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:315)
at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.ApplicationDispatcher.inv oke(ApplicationDispatcher.java:691)
at org.apache.catalina.core.ApplicationDispatcher.pro cessRequest(ApplicationDispatcher.java:469)
at org.apache.catalina.core.ApplicationDispatcher.doF orward(ApplicationDispatcher.java:364)
at org.apache.catalina.core.ApplicationDispatcher.for ward(ApplicationDispatcher.java:301)
at com.novell.web.NJWCServlet.serviceImpl(NJWCServlet .java:97)
at com.novell.zenworks.fw.web.internal.ZENworksServle t.service(ZENworksServlet.java:84)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:803)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:188)
at com.patchlink.sapphire.web.pages.vulnerability.ses sion.HibernateSessionFilter.doFilter(HibernateSess ionFilter.java:75)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:174)
at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:525)
at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:108)
at com.novell.zenworks.tomcat.ZENRequestValve.invoke( ZENRequestValve.java:1196)
at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:870)
at org.apache.coyote.http11.Http11BaseProtocol$Http11 ConnectionHandler.processConnection(Http11BaseProt ocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)
Caused by: com.novell.zenworks.datamodel.exceptions.ObjectNot FoundException: 9975e1e86387c70df86e56110daef678
at com.novell.zenworks.datamodel.session.hibernate.Hi bernateAbstractSession.getBasicInformation(Hiberna teAbstractSession.java:869)
at com.novell.zenworks.datamodel.session.hibernate.Hi bernateBasicSession.getBasicObject(HibernateBasicS ession.java:568)
at com.novell.zenworks.datamodel.services.BasicAdminI mpl.getBasicObject(BasicAdminImpl.java:169)
at com.novell.zenworks.wol.WakeOnLanDirectImpl.getTyp es(WakeOnLanDirectImpl.java:174)
... 51 more
28 Apr 2010 17:14:57

Exception Info:
28 Apr 2010 17:14:57 Class....... com.novell.zenworks.wol.WOLException
28 Apr 2010 17:14:57 Message..... com.novell.zenworks.datamodel.exceptions.ObjectNot FoundException: 9975e1e86387c70df86e56110daef678
28 Apr 2010 17:14:57 Logged at... Messages............313
28 Apr 2010 17:14:57 ============== Exception (end) =============================

Any ideas??

THanks again