Error while creating new application in CMS 6.1

Hi,
I have been posting to this list from last few months regularly but
getting very very few response.Here i'm back again with one more new
problem. I'm trying to add my application called liberty to the existing
applications in CMS 6.1. I followed step by step instructions as per the
binder application example given in cms guide. The new application is
loading fine but during runtime it gives the following error 

Error:
type Exception report

message Internal Server Error

description The server encountered an internal error (Internal Server
Error) that prevented it from fulfilling this request.

exception

com.arsdigita.persistence.PersistenceException: No such type: com.EOL.liberty.Liberty
	at com.arsdigita.persistence.DataObjectImpl.specialize(DataObjectImpl.java:403)
	at com.arsdigita.kernel.ACSObjectInstantiator.resolveInstantiator(ACSObjectInstantiator.java:124)
	at com.arsdigita.domain.DomainObjectFactory.newInstance(DomainObjectFactory.java:133)
	at com.arsdigita.web.Application.retrieveApplication(Application.java:230)
	at com.arsdigita.web.Application.retrieveApplicationForPath(Application.java:281)
	at com.arsdigita.web.BaseDispatcher$Cache.retrieve(BaseDispatcher.java:350)
	at com.arsdigita.web.PathMapCache.get(PathMapCache.java:91)
	at com.arsdigita.web.BaseDispatcher$Cache.getAppSpec(BaseDispatcher.java:366)
	at com.arsdigita.web.BaseDispatcher.lookupApplicationSpec(BaseDispatcher.java:220)
	at com.arsdigita.web.BaseDispatcher.dispatch(BaseDispatcher.java:111)
	at com.arsdigita.web.DispatcherServlet.doService(DispatcherServlet.java:122)
	at com.arsdigita.web.BaseServlet$1.excurse(BaseServlet.java:175)
	at com.arsdigita.kernel.KernelExcursion.run(KernelExcursion.java:56)
	at com.arsdigita.web.BaseServlet.internalService(BaseServlet.java:146)
	at com.arsdigita.web.BaseServlet.doGet(BaseServlet.java:271)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at com.arsdigita.london.shortcuts.ShortcutFilter.doService(ShortcutFilter.java:79)
	at com.arsdigita.web.BaseFilter.doFilter(BaseFilter.java:94)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at com.arsdigita.london.subsite.SubsiteFilter.doService(SubsiteFilter.java:69)
	at com.arsdigita.web.BaseFilter.doFilter(BaseFilter.java:94)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:577)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
	at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1040)
	at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1151)
	at java.lang.Thread.run(Thread.java:568)

Any help will be greatly appreciated 

Thanks,
Sukesh Shetty

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