Component generated an error, NOT caching

psr

This was working alright till a while before. Suddenly started getting this error.
Has anybody seen this error. I am getting this while previewing the .template.
LS3.1.0
TS672
=====================
Below is the full error details.
19:57:55,947 ERROR [PageTokenComponent] Component generated an error, NOT caching
-----STARTata-----
< xmp id='exceptionStackTrace' style='display:none'>java.lang.RuntimeException: Execution exception in com.interwoven.livesite.external.ExternalCall@168c78e[object=com.client.iwov.livesite.external.TestArchive,method=public org.dom4j.Document getNews(com.interwoven.livesite.runtime.RequestContext,),scope=local,parameters={},prefixCalls=[com.interwoven.livesite.common.pojo.PojoMethodCall@9b027d[object=com.client.iwov.livesite.external.TestArchive,method=public org.dom4j.Document availableData(com.interwoven.livesite.runtime.RequestContext,),scope=local,parameters={}]]]
at com.interwoven.livesite.common.pojo.PojoMethodCall.execute(PojoMethodCall.java:465)
...
...
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
...
...
...
Caused by: java.lang.NoSuchMethodError: com.client.iwov.livesite.external.TestArchive.access$000(Lcom/client/iwov/livesite/external/TestArchiveLorg/hibernate/Session;
at com.client.iwov.livesite.external.TestArchive$TestArchiveParameters.getContentCategory(TestArchive.java:222)

Thanks