Please review SAP Note https://launchpad.support.sap.com/#/notes/1894504/E
"
- In case of errors instantiating data sources, please check your etc/services file on the server or desktop (local mode).
Hints in the trace file are:
service '?'
Connect to message server host failed#"
There are other suggestions in the note as well.
Also see Design Studio Troubleshooting - Business Intelligence (BusinessObjects) - SCN Wiki