Found new bug in SUM (1.0.14.9). On first connect you receive follow message:
Jan 29, 2016 6:24:49 AM [Error]: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
Jan 29, 2016 6:24:49 AM [Error]: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
Jan 29, 2016 6:24:49 AM [Error]: Network input/output exception has occurred: Received fatal alert: certificate_unknown
Jan 29, 2016 6:24:49 AM [Error]: com.sap.sdt.engine.core.communication.ProxyException
Occure on new java version -> 1.8.0_71-b15
Workarround: Link SUM java exec. to java full version "1.8.0_51-b16", this one seems still to work. Hope SAP will update this soon.
Happy Patching...