WebNMS 5.2 : Stuck for weeks trying to follow the EMS tutorial by Eclipse plugin

WebNMS 5.2 : Stuck for weeks trying to follow the EMS tutorial by Eclipse plugin

I tried deploying the NAR file that comes along with the tutorial, EMS_tutorial1.0.nar -> I just don't get the 5-switch star network view at all!
I saw in one of the forums that the tutorial NAR file is for WebNMS 4.7 and requires an upgrade. I tried following the solution that requires to run StudioTools/bin... I tried running the bat files in the folder, none of them open or execute anything. Let alone updating the nar file.

Then I tried with modelling a switch. I try modelling it, and the Eclipse plugin states the 'Switch' is already modelled. I have no idea what to do!

And then I went on with the Discovery Filter section... I keep printing messages for debugging purposes, and they just won't appear anywhere. 

PLEASE HELP ME.