Unable to start App Engine

[Anoop John]

I am getting the following error when i starts the AppEngine in Dev
mode in eclipse. I am using AppEngine 1.3.4. Please let me know what
should i do for this.

Starting Jetty on port 8888
[WARN] failed org.mortbay.jetty.nio.SelectChannelConnector$1@adb1d4
java.lang.NoSuchMethodError: org.mortbay.thread.Timeout.<init>(Ljava/
lang/Object;)V
at org.mortbay.io.nio.SelectorManager
$SelectSet.<init>(SelectorManager.java:306)
at org.mortbay.io.nio.SelectorManager.doStart(SelectorManager.java:
223)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
org.mortbay.jetty.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:
303)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at org.mortbay.jetty.Server.doStart(Server.java:233)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:
543)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:421)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1035)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:783)
at com.google.gwt.dev.DevMode.main(DevMode.java:275)
[WARN] failed SelectChann...@127.0.0.1:8888
java.lang.NoSuchMethodError: org.mortbay.thread.Timeout.<init>(Ljava/
lang/Object;)V
at org.mortbay.io.nio.SelectorManager
$SelectSet.<init>(SelectorManager.java:306)
at org.mortbay.io.nio.SelectorManager.doStart(SelectorManager.java:
223)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
org.mortbay.jetty.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:
303)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at org.mortbay.jetty.Server.doStart(Server.java:233)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:
543)
log4j:WARN No appenders could be found for logger
(org.apache.jasper.compiler.JspRuntimeContext).
log4j:WARN Please initialize the log4j system properly.
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:421)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1035)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:783)
at com.google.gwt.dev.DevMode.main(DevMode.java:275)
[WARN] failed Server@b5dac4
java.lang.NoSuchMethodError: org.mortbay.thread.Timeout.<init>(Ljava/
lang/Object;)V
at org.mortbay.io.nio.SelectorManager
$SelectSet.<init>(SelectorManager.java:306)
at org.mortbay.io.nio.SelectorManager.doStart(SelectorManager.java:
223)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
org.mortbay.jetty.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:
303)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at org.mortbay.jetty.Server.doStart(Server.java:233)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:
543)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:421)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1035)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:783)
at com.google.gwt.dev.DevMode.main(DevMode.java:275)
Exception in thread "main" java.lang.NoSuchMethodError:
org.mortbay.thread.Timeout.<init>(Ljava/lang/Object;)V
at org.mortbay.io.nio.SelectorManager
$SelectSet.<init>(SelectorManager.java:306)
at org.mortbay.io.nio.SelectorManager.doStart(SelectorManager.java:
223)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
org.mortbay.jetty.nio.SelectChannelConnector.doStart(SelectChannelConnector.java:
303)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at org.mortbay.jetty.Server.doStart(Server.java:233)
at
org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
39)
at
com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:
543)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:421)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1035)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:783)
at com.google.gwt.dev.DevMode.main(DevMode.java:275)

[jamesmi...@googlemail.com]

I got this error after trying to use my own compiled gwt trunk, if
that helps.

>    [WARN] failed SelectChannelConnec...@127.0.0.1:8888

[Sripathi Krishnan]

java.lang.NoSuchMethodError: org.mortbay.thread.Timeout

This usual indicates problems with the classpath. Do you have multiple versions of Jetty in your classpath by any chance? 

To identify duplicate classes in eclipse, hit Ctrl+Shift+T to bring the 'Open Type' dialog. Search for the class org.mortbay.thread.Timeout. Ideally it should only come in gwt-dev.jar, but I suspect in your case some other jar file would also have it.

--Sri

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