Error with google app engine

[gaara]

Hi,
Could someone figure out about the source of those errors,
Please help,,
Gaara

INFO: Unable to access
https://appengine.google.com/api/updatecheck?runtime=java&release=1.4.3&timestamp=1300990822&api_versions=['1.0']
javax.net.ssl.SSLHandshakeException:
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1665)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:258)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:252)
at
sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:
1165)
at
sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:
154)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:610)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:546)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:913)
at
sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:
1158)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:
1185)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:
1169)
at
sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:
423)
at
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:
185)
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:
1139)
at
sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:
254)
at java.net.URL.openStream(URL.java:1029)
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.DevAppServerMain
$StartAction.apply(DevAppServerMain.java:150)
at com.google.appengine.tools.util.Parser
$ParseResult.applyArgs(Parser.java:48)
at
com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServerMain.java:
113)
at
com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:
89)
Caused by: sun.security.validator.ValidatorException: PKIX path
building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:
302)
at
sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:
205)
at sun.security.validator.Validator.validate(Validator.java:235)
at
sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:
147)
at
sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:
230)
at
sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:
270)
at
sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:
1144)
... 20 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException:
unable to find valid certification path to requested target
at
sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:
197)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:255)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:
297)
... 26 more
14 juin 2011 15:04:50 com.google.apphosting.utils.jetty.JettyLogger
info
INFO: Logging to JettyLogger(null) via
com.google.apphosting.utils.jetty.JettyLogger
14 juin 2011 15:04:50
com.google.apphosting.utils.config.AppEngineWebXmlReader
readAppEngineWebXml
INFO: Successfully processed /home/user/workspace/APIDataStore/war/WEB-
INF/appengine-web.xml
14 juin 2011 15:04:50
com.google.apphosting.utils.config.AbstractConfigXmlReader
readConfigXml
INFO: Successfully processed /home/user/workspace/APIDataStore/war/WEB-
INF/web.xml
14 juin 2011 15:04:53
com.google.appengine.tools.development.DevAppServerImpl start
INFO: The server is running at http://localhost:8888/
14 juin 2011 15:05:17
com.google.appengine.tools.development.LocalResourceFileServlet doGet
ATTENTION: No file found for: /favicon.ico