With Eclipse Luna Service Release 1 (4.4.1), it's not working eclipse.buildId=4.4.1.M20140925-0400java.version=1.7.0_80java.vendor=Oracle CorporationBootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=fr_FRFramework arguments: -product org.eclipse.epp.package.jee.productCommand-line arguments: -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.jee.productorg.eclipse.equinox.p2.transport.ecfErrorThu Jan 05 10:27:05 CET 2017Unable to read repository at http://sourceforge.net/projects/jasperstudio/files/updatesite/6.3.1/site.xml.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:1904) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:279) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:273) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1446) at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:209) at sun.security.ssl.Handshaker.processLoop(Handshaker.java:913) at sun.security.ssl.Handshaker.process_record(Handshaker.java:849) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1023) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1332) at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:709) at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:122) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flushBuffer(AbstractSessionOutputBuffer.java:147) at org.apache.http.impl.io.AbstractSessionOutputBuffer.flush(AbstractSessionOutputBuffer.java:154) at org.apache.http.impl.AbstractHttpClientConnection.doFlush(AbstractHttpClientConnection.java:278) at org.apache.http.impl.AbstractHttpClientConnection.flush(AbstractHttpClientConnection.java:283) at org.apache.http.impl.conn.AbstractClientConnAdapter.flush(AbstractClientConnAdapter.java:197) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:260) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:715) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:520) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1077) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1068) at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1064) at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:73) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)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:385) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292) at sun.security.validator.Validator.validate(Validator.java:260) at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:326) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:231) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:126) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1428) ... 23 moreCaused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:196) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:268) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:380) ... 29 more