Google App Engine error

[Crimsonarcher via StackOverflow]

I get an error while trying an application on Google App Engine as below...any idea why? My hunch is since I'm behind a proxy, I'm not able to connect to the appengine. If thats the case how do i set it up?

Initializing App Engine server
Apr 25, 2012 1:07:32 PM com.google.appengine.tools.info.RemoteVersionFactory getVersion
INFO: Unable to access http://appengine.google.com/api/updatecheck?runtime=java&release=1.5.4&timestamp=1315604504&api_versions=['1.0']
java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(Unknown Source)
    at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.<init>(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.http.HttpClient.New(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.URL.openStream(Unknown Source)
    at com.google.appengine.tools.info.RemoteVersionFactory.getVersion(RemoteVersionFactory.java:76)
    at com.google.appengine.tools.info.UpdateCheck.checkForUpdates(UpdateCheck.java:99)
    at com.google.appengine.tools.info.UpdateCheck.doNagScreen(UpdateCheck.java:174)
    at com.google.appengine.tools.info.UpdateCheck.maybePrintNagScreen(UpdateCheck.java:142)
    at com.google.appengine.tools.development.gwt.AppEngineLauncher.maybePerformUpdateCheck(AppEngineLauncher.java:115)
    at com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:81)
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
    at com.google.gwt.dev.DevMode.main(DevMode.java:311)

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http://stackoverflow.com/questions/10311472/google-app-engine-error

[Shay Erlichmen via StackOverflow]

By default the development server checks for updates during startup, you can disable it using --disable_update_check

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http://stackoverflow.com/questions/10311472/google-app-engine-error/10311558#10311558