Re-enter LKStatistics

Exception Description Application: LKStatistics Error: java.lang.IllegalArgumentException: <com.webobjects.appserver._private.WOComponentDefinition> Class 'Main' exists but is not a subclass of WOComponent. Reason: <com.webobjects.appserver._private.WOComponentDefinition> Class 'Main' exists but is not a subclass of WOComponent. Stack trace: File Line# Method Package WOComponentDefinition.java 496 _componentClass com.webobjects.appserver._private WOComponentDefinition.java 504 componentClass com.webobjects.appserver._private WOComponentDefinition.java 510 _componentInstanceInContext com.webobjects.appserver._private WOComponentDefinition.java 642 componentInstanceInContext com.webobjects.appserver._private WOApplication.java 2332 pageWithName com.webobjects.appserver ERXComponentRequestHandler.java 221 _dispatchWithPreparedSession er.extensions.appserver ERXComponentRequestHandler.java 268 _dispatchWithPreparedApplication er.extensions.appserver ERXComponentRequestHandler.java 302 _handleRequest er.extensions.appserver ERXComponentRequestHandler.java 378 handleRequest er.extensions.appserver WOApplication.java 1687 dispatchRequest com.webobjects.appserver ERXApplication.java 2183 dispatchRequestImmediately er.extensions.appserver ERXApplication.java 2148 dispatchRequest er.extensions.appserver XYApplication.java 516 dispatchRequest com.xyrality.webobjects WOWorkerThread.java 144 runOnce com.webobjects.appserver._private WOWorkerThread.java 226 run com.webobjects.appserver._private Thread.java 748 run java.lang NA : Non applicable, JIT activated