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java.lang.Exception: Stack trace	at java.lang.Thread.dumpStack(Thread.java:1273)	at java.security.AccessControlContext.checkPermission(AccessControlContext.java:364)	at java.security.AccessController.checkPermission(AccessController.java:546)	at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)	at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:166)	at com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkAccess(DevAppServerFactory.java:191)	at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:299)	at java.lang.Thread.init(Thread.java:336)	at java.lang.Thread.(Thread.java:626)	at java.util.concurrent.Executors$DefaultThreadFactory.newThread(Executors.java:542)	at net.liftweb.util.TF$.newThread(Schedule.scala:196)	at java.util.concurrent.ThreadPoolExecutor.addThread(ThreadPoolExecutor.java:672)	at java.util.concurrent.ThreadPoolExecutor.addIfUnderCorePoolSize(ThreadPoolExecutor.java:697)	at java.util.concurrent.ThreadPoolExecutor.prestartCoreThread(ThreadPoolExecutor.java:1381)	at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:222)	at java.util.concurrent.ScheduledThreadPoolExecutor.schedule(ScheduledThreadPoolExecutor.java:409)	at java.util.concurrent.Executors$DelegatedScheduledExecutorService.schedule(Executors.java:654)	at net.liftweb.util.Schedule$class.liftedTree1$1(Schedule.scala:171)	at net.liftweb.util.Schedule$class.schedule(Schedule.scala:169)	at net.liftweb.util.Schedule$.schedule(Schedule.scala:34)	at net.liftweb.util.Schedule$class.schedule(Schedule.scala:102)	at net.liftweb.util.Schedule$.schedule(Schedule.scala:34)	at net.liftweb.http.SessionMaster$.net$liftweb$http$SessionMaster$$doPing(LiftSession.scala:398)	at net.liftweb.http.SessionMaster$.(LiftSession.scala:405)	at net.liftweb.http.SessionMaster$.(LiftSession.scala)	at net.liftweb.http.LiftRules$class.net$liftweb$http$LiftRules$$_getLiftSession(LiftRules.scala:234)	at net.liftweb.http.LiftRules$$anonfun$4.apply(LiftRules.scala:205)	at net.liftweb.http.LiftRules$$anonfun$4.apply(LiftRules.scala:205)	at net.liftweb.http.LiftServlet.getLiftSession(LiftServlet.scala:69)	at net.liftweb.http.LiftServlet.doService(LiftServlet.scala:258)	at net.liftweb.http.LiftServlet$$anonfun$doIt$1$1.apply(LiftServlet.scala:122)	at net.liftweb.http.LiftServlet$$anonfun$doIt$1$1.apply(LiftServlet.scala:121)	at net.liftweb.util.TimeHelpers$class.calcTime(TimeHelpers.scala:344)	at net.liftweb.util.Helpers$.calcTime(Helpers.scala:34)	at net.liftweb.util.TimeHelpers$class.logTime(TimeHelpers.scala:363)	at net.liftweb.util.Helpers$.logTime(Helpers.scala:34)	at net.liftweb.http.LiftServlet.doIt$1(LiftServlet.scala:121)	at net.liftweb.http.LiftServlet.service(LiftServlet.scala:132)	at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply(HTTPProvider.scala:68)	at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2$$anonfun$apply$mcV$sp$1.apply(HTTPProvider.scala:68)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.URLRewriter$.doWith(Req.scala:1228)	at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply(HTTPProvider.scala:67)	at net.liftweb.http.provider.HTTPProvider$$anonfun$service$2.apply(HTTPProvider.scala:67)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.provider.HTTPProvider$class.service(HTTPProvider.scala:63)	at net.liftweb.http.LiftFilter.service(LiftServlet.scala:722)	at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply(ServletFilterProvider.scala:62)	at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1$$anonfun$apply$mcV$sp$1.apply(ServletFilterProvider.scala:62)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12$$anonfun$apply$13$$anonfun$apply$14$$anonfun$apply$15.apply(Vars.scala:544)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12$$anonfun$apply$13$$anonfun$apply$14.apply(Vars.scala:543)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12$$anonfun$apply$13.apply(Vars.scala:542)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12.apply(Vars.scala:541)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:540)	at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1.apply(ServletFilterProvider.scala:61)	at net.liftweb.http.provider.servlet.ServletFilterProvider$$anonfun$doFilter$1.apply(ServletFilterProvider.scala:61)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12$$anonfun$apply$13$$anonfun$apply$14$$anonfun$apply$15.apply(Vars.scala:544)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12$$anonfun$apply$13$$anonfun$apply$14.apply(Vars.scala:543)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12$$anonfun$apply$13.apply(Vars.scala:542)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$$anonfun$apply$12.apply(Vars.scala:541)	at net.liftweb.util.ThreadGlobal.doWith(ThreadGlobal.scala:71)	at net.liftweb.http.CoreRequestVarHandler$class.apply(Vars.scala:540)	at net.liftweb.http.provider.servlet.ServletFilterProvider$class.doFilter(ServletFilterProvider.scala:60)	at net.liftweb.http.LiftFilter.doFilter(LiftServlet.scala:722)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:58)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)	at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:70)	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)	at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:351)	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)	at org.mortbay.jetty.Server.handle(Server.java:326)	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)