Problem in store: Uncaught ReferenceError: Invalid action reference passed in

[SH4DY]

I implemented an example project exactly like this one but I'm getting Uncaught ReferenceError: Invalid action reference passed in. This error is thrown at runtime in my store at this.bindListeners: ClassName.methodName

I found the error on the altjs doc page, but my Actions are of the same structure as the one in the example:

interface Actions{
    refreshComponentLibrary():void;
    componentLibraryRefreshed(componentLibrary: MqtlComponent[]):void;
    componentLibraryRefreshFailed(errorMsg:string):void;
}

class ComponentLibraryActions extends AbstractActions implements Actions{

    constructor(){
        super(altInstance);
        this.generateActions(
            "refreshComponentLibrary",
            "componentLibraryRefreshed",
            "componentLibraryRefreshFailed"
        )
    }

    refreshComponentLibrary = () => {
        console.log("ACTION!!! Refresh comp library");
        this.dispatch();

        //Trigger async
        ComponentLibraryStore.fetchComponentsFromServer();
    }

    componentLibraryRefreshed = (componentLibrary: MqtlComponent[]) => {
        console.log("Dispatch action: Library refreshed");
        this.dispatch(componentLibrary);
    }

    componentLibraryRefreshFailed = (errorMsg: string) => {
        console.log("Dispatch action: Library refresh failed");
        this.dispatch(errorMsg);
    }
}

export = altInstance.createActions<Actions>(ComponentLibraryActions);

Tried it without the this.generateActions(...) too, but no luck...

Any idea whats going wrong here? I can't get this project to run either (gives me an error Error: ENOENT: no such file or directory, open '/Users/rlopezna/dev/alt-typescript-tutorial/typings/references.d.ts'after npm start)...