How can I get rid of this Error?

[Manny]

I'm currently trying to work on my application from Africa and am
having problems debuggin
without a consistent internet connection. Please let me know which
portion of code causes the
prompt below so I may extract it thanks.

Initializing AppEngine server
Unable to access
http://appengine.google.com/api/updatecheck?runtime=java&release=1.4.0&timestamp=1291156877&api_versions=['1.0']
java.net.UnknownHostException: appengine.google.com
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
at sun.net.www.http.HttpClient.New(HttpClient.java:306)
at sun.net.www.http.HttpClient.New(HttpClient.java:323)
at
sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:
975)
at
sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:
916)
at
sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:
841)
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:
1177)
at java.net.URL.openStream(URL.java:1010)
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:
137)
at
com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:
103)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:431)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1053)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:795)
at com.google.gwt.dev.DevMode.main(DevMode.java:282)
Logging to JettyLogger(null) via
com.google.apphosting.utils.jetty.JettyLogger
Successfully processed /home/manster/workspace/GymBuddy/war/WEB-INF/
appengine-web.xml
Successfully processed /home/manster/workspace/GymBuddy/war/WEB-INF/
web.xml
The server is running at http://localhost:8888/