I'm trying to install the recently released PublicationMapping extension to work with TopologyManager on Web 8 https://community.sdl.com/developers/tridion_developer/m/mediagallery/1309
After performing all the steps as mentioned in the distribution documentation, the CME refuses to load (stuck in Loading) and I get see the following error in console :
Uncaught SyntaxError: Unexpected token <
I would associate this with perhaps a typo in the configuration and invalid XML but I double checked the snippets that I added to System.config and they are valid xml items.
The interesting bit is that if I comment out the Model entries, the CME loads just fine.
Note that, it's a vanilla installation of Web 8 and there are no publications defined yet, would that be a problem?