I am unable to upload the VIB file to DS
The operation failed for an undetermined reason. Typically this problem occurs due to certificates that the browser does not trust. If you are using self-signed or custom certificates, open the URL below in a new browser tab and accept the certificate, then retry the operation.
I have added the cert as per below KB.. but still same error, tried in chrome/Mozilla
KB article: http://kb.vmware.com/kb/2147256