I can't delete a project - Exception

I get this message, when I'm trying to delete a project:

javax.jdo.JDOObjectNotFoundException: No such database row
FailedObject:15
at org.jpox.store.rdbms.request.FetchRequest.execute(FetchRequest.java:194)
at org.jpox.store.rdbms.table.ClassTable.fetch(ClassTable.java:2552)
at org.jpox.store.StoreManager.fetch(StoreManager.java:959)
at org.jpox.state.StateManagerImpl.refreshLoadedFields(StateManagerImpl.java:1917)
at org.jpox.state.jdo.Hollow.transitionMakeTransactional(Hollow.java:69)
at org.jpox.state.StateManagerImpl.attachCopy(StateManagerImpl.java:4298)
at org.jpox.AbstractPersistenceManager.attachCopy(AbstractPersistenceManager.java:1431)
at org.jpox.sco.List.attachCopy(List.java:417)
at org.jpox.state.AttachFieldManager.storeObjectField(AttachFieldManager.java:157)
at org.jpox.state.StateManagerImpl.providedObjectField(StateManagerImpl.java:2771)
at org.apache.maven.continuum.model.project.Project.jdoProvideField(Project.java)
at org.apache.maven.continuum.model.project.Project.jdoProvideFields(Project.java)
at org.jpox.state.StateManagerImpl.provideFields(StateManagerImpl.java:3115)
at org.jpox.state.StateManagerImpl.internalAttachCopy(StateManagerImpl.java:4389)
at org.jpox.state.StateManagerImpl.attachCopy(StateManagerImpl.java:4331)
at org.jpox.AbstractPersistenceManager.attachCopy(AbstractPersistenceManager.java:1431)
at org.jpox.state.AttachFieldManager.storeObjectField(AttachFieldManager.java:175)
at org.jpox.state.StateManagerImpl.providedObjectField(StateManagerImpl.java:2771)
at org.apache.maven.continuum.model.project.BuildResult.jdoProvideField(BuildResult.java)
at org.apache.maven.continuum.model.project.BuildResult.jdoProvideFields(BuildResult.java)
at org.jpox.state.StateManagerImpl.provideFields(StateManagerImpl.java:3115)
at org.jpox.state.StateManagerImpl.internalAttachCopy(StateManagerImpl.java:4389)
at org.jpox.state.StateManagerImpl.attachCopy(StateManagerImpl.java:4331)
at org.jpox.AbstractPersistenceManager.attachCopy(AbstractPersistenceManager.java:1431)
at org.jpox.AbstractPersistenceManager.internalMakePersistent(AbstractPersistenceManager.java:1161)
at org.jpox.AbstractPersistenceManager.makePersistent(AbstractPersistenceManager.java:1277)
at org.apache.continuum.dao.BuildResultDaoImpl.updateBuildResult(BuildResultDaoImpl.java:63)
at org.apache.maven.continuum.DefaultContinuum.removeProject(DefaultContinuum.java:863)
at org.apache.maven.continuum.web.action.ProjectsListAction.remove(ProjectsListAction.java:100)
at org.apache.maven.continuum.web.action.ProjectsListAction.execute(ProjectsListAction.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:358)
at com.opensymphony.xwork.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:218)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:192)
at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:175)
at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:115)
at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.apache.maven.continuum.web.interceptor.ForceContinuumConfigurationInterceptor.intercept(ForceContinuumConfigurationInterceptor.java:72)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.codehaus.plexus.redback.xwork.interceptor.PolicyEnforcementInterceptor.intercept(PolicyEnforcementInterceptor.java:149)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.codehaus.plexus.redback.xwork.interceptor.SecureActionInterceptor.intercept(SecureActionInterceptor.java:178)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.codehaus.plexus.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:58)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:175)
at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:115)
at com.opensymphony.xwork.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.webwork.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:174)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.webwork.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:169)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:151)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:186)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.codehaus.plexus.redback.xwork.interceptor.AutoLoginInterceptor.intercept(AutoLoginInterceptor.java:156)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.codehaus.plexus.redback.xwork.interceptor.ForceAdminUserInterceptor.intercept(ForceAdminUserInterceptor.java:76)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at org.codehaus.plexus.redback.xwork.interceptor.EnvironmentCheckInterceptor.intercept(EnvironmentCheckInterceptor.java:122)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:116)
at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:273)
at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:202)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
at com.opensymphony.webwork.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:88)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)