[show] java.lang.IllegalArgumentException: Invalid Value.

net.sourceforge.stripes.exception.StripesServletException: Unhandled exception
in exception handler.
	at net.sourceforge.stripes.exception.DefaultExceptionHandler.handle(DefaultExceptionHandler.java:158)
	at net.sourceforge.stripes.controller.StripesFilter.doFilter(StripesFilter.java:249)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at nl.nextfactory.stripes.PersistenceFilter.doFilter(PersistenceFilter.java:41)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at com.planetj.servlet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:270)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at nl.nextfactory.stripes.BotFriendlyFilter.doFilter(BotFriendlyFilter.java:46)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:183)
	at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:103)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:286)
	at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:780)
	at com.caucho.server.connection.TcpConnection.dispatchRequest(TcpConnection.java:600)
	at com.caucho.server.connection.TcpConnection.handleRequestsImpl(TcpConnection.java:566)
	at com.caucho.server.connection.TcpConnection.handleRequests(TcpConnection.java:519)
	at com.caucho.server.connection.TcpConnection$AcceptTask.doTask(TcpConnection.java:1100)
	at com.caucho.server.connection.TcpConnection$ConnectionReadTask.runThread(TcpConnection.java:1037)
	at com.caucho.server.connection.TcpConnection$AcceptTask.run(TcpConnection.java:1068)
	at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:901)
	at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:866)
Caused by: java.lang.IllegalArgumentException: Invalid Value.
	at com.spaceprogram.kittycache.KittyCache.put(KittyCache.java:84)
	at nl.nextfactory.client.mcn.website.db.Queries.getLinkTree(Queries.java:316)
	at nl.nextfactory.client.mcn.website.action.LinkActionBean.display(LinkActionBean.java:51)
	at sun.reflect.GeneratedMethodAccessor110.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at net.sourceforge.stripes.controller.DispatcherHelper$6.intercept(DispatcherHelper.java:442)
	at net.sourceforge.stripes.controller.ExecutionContext.proceed(ExecutionContext.java:158)
	at net.sourceforge.stripes.controller.BeforeAfterMethodInterceptor.intercept(BeforeAfterMethodInterceptor.java:113)
	at net.sourceforge.stripes.controller.ExecutionContext.proceed(ExecutionContext.java:155)
	at net.sourceforge.stripes.controller.ExecutionContext.wrap(ExecutionContext.java:74)
	at net.sourceforge.stripes.controller.DispatcherHelper.invokeEventHandler(DispatcherHelper.java:440)
	at net.sourceforge.stripes.controller.DispatcherServlet.invokeEventHandler(DispatcherServlet.java:285)
	at net.sourceforge.stripes.controller.DispatcherServlet.doPost(DispatcherServlet.java:167)
	at net.sourceforge.stripes.controller.DispatcherServlet.doGet(DispatcherServlet.java:67)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:119)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:96)
	at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:109)
	at net.sourceforge.stripes.controller.StripesFilter.doFilter(StripesFilter.java:246)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at nl.nextfactory.stripes.PersistenceFilter.doFilter(PersistenceFilter.java:41)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at com.planetj.servlet.filter.compression.CompressingFilter.doFilter(CompressingFilter.java:270)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at nl.nextfactory.stripes.BotFriendlyFilter.doFilter(BotFriendlyFilter.java:46)
	at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:88)
	at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:183)
	at com.caucho.server.webapp.AccessLogFilterChain.doFilter(AccessLogFilterChain.java:103)
	at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:286)
	at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:780)
	at com.caucho.server.connection.TcpConnection.dispatchRequest(TcpConnection.java:600)
	at com.caucho.server.connection.TcpConnection.handleRequestsImpl(TcpConnection.java:566)
	at com.caucho.server.connection.TcpConnection.handleRequests(TcpConnection.java:519)
	at com.caucho.server.connection.TcpConnection$AcceptTask.doTask(TcpConnection.java:1100)
	at com.caucho.server.connection.TcpConnection$ConnectionReadTask.runThread(TcpConnection.java:1037)
	at com.caucho.server.connection.TcpConnection$AcceptTask.run(TcpConnection.java:1068)
	at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:901)
	at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:866)