You need to modify the server name from localhost to the name of your BusinessObjects server on which you deployed the Esri Maps for SAP BusinessObjects server components. e.g. http://mycompany.com:8080. Also if your server is running on a port other than 8080, change the port number as well.
For more information on Installing the client-side components kindly refer to the online help http://location-analytics.arcgis.com/en/maps-for-sap-bobj/install-and-configure/install-client-side-...
Hope this helps.
I noticed from the screenshot you attached that the em4bob.properties file is not in the correct path. Please nagivate to the the assets sub-folder within the Xcelsius folder and create a new subfolder named em4bobj.
e.g. C:\Program Files (x86)\SAP BusinessObjects\Xcelsius 4.0\assets\em4bobj
Copy the em4bobj.properties file to the newly created em4bobj folder. You should now be able to launch the Esri Maps Designer.