Angular2 forms error when using JavaScriptServices/Universal #646

The problem that I am having is that I get a runtime error if I have a form in a component.

I am importing both FormsModule and ReactiveFormsModule.

My form looks like this...

<form (ngSubmit)="onSubmit()" #loginForm="ngForm" >
...
</form>

The error I am getting is...

Exception: Call to Node module failed with error: Prerendering failed because of error: TypeError: _angular_core.InjectionToken is not a constructor at C:\XXX\ClientApp\dist\main-server.js:35055:42

What have I missed? My form setup worked perfectly when I was not using the JavaScriptServices starter for server side rendering.