Problem accessing Ingenuity Pathway analysis software

Hi,
I am trying to access the software IPA (Ingenuity Pathway Analysis) from my computer. However I am getting an error and I suspect if there is an active proxy/firewall that may be blocking IPA. I am getting the following error message:

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:1946)

at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:316)

at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:310)

at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1639)

at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:223)

at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1037)

at sun.security.ssl.Handshaker.process_record(Handshaker.java:965)

at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1064)

at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)

at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1395)

at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1379)

at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)

at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)

at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:162)

at com.ingenuity.qiastart.util.ConnectionReader.sendRequest(ConnectionReader.java:236)

at com.ingenuity.qiastart.util.ConnectionReader.connect(ConnectionReader.java:139)

at com.ingenuity.qiastart.QiaStartController.qiastartVersionIsAcceptable(QiaStartController.java:1005)

at com.ingenuity.qiastart.QiaStartController.run(QiaStartController.java:217)

at com.ingenuity.qiastart.QiaStartController.main(QiaStartController.java:164)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:84)

at com.install4j.runtime.launcher.MacLauncher.main(MacLauncher.java:52)

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:397)

at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302)

at sun.security.validator.Validator.validate(Validator.java:262)

at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)

at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)

at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)

at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1621)

… 21 more

Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)

at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)

at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)

at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)

… 27 more

Thank you
Arijita