How to resolve Exception: No Hudson/Jenkins header found! with RTC clent 6.0.2 and Jenkins 2.60.1 ?

I am getting

Connection test requested.
    Connecting to: http://9.124.102.129:8080/
    Exception: No Hudson/Jenkins header found!
    Test connection FAILED!


while trying to test connection to Jenkins 2.60.1 [installed on Linux] from build engine created in RTC client 6.0.2 [running on Windows]

I have checked connectivity between machine and also jenkins server can connect to RTC server as well.

I have RTC build toolkit 602 installed and configured in Jenkins