Unable to find Engine

[Mone]

Mone what did you mean saying "Your configuration is ok if you access the page from Lightstreamer internal web server with an url like http://localhost:8080/MyApp/"?

I mean that if your LS server also serve the static pages you can access it via localhost and without setting the domain, in the other case (i.e.: pages from a web server, streaming from Lightstreamer) than you need to set the domain accordingly to the LS host setting. In your case (in the case you're not using Lightstreamer internal web server) you should change the setDomain call:
lsPage.context.setDomain("domain.com");

If you're using Lightstreamer internal web server than the configuration seems correct. Please could you send Lightstreamer's log?