Has anyone been able to install Atelier 1.3? I'm getting an error in Eclipse that it's missing(?) the content.xml file...

Unable to read repository at https://atelier.artifactoryonline.com/atelier/updates/stable/1.3/conten….
Unable to read repository at https://atelier.artifactoryonline.com/atelier/updates/stable/1.3/conten….
sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target