Just watched "Ghost Machine" with a few friends (all nerds) and I actually quite enjoyed it. It had some weak points but overall was a interesting and enjoyable movie.
But if you don't like sci-fi and horror combined - stay far away from this one. The horror elements are not that scary and the sci-fi is not that convincing. But my friends and I still enjoyed it - especially because of of a lot of action/soldier/cool moments.
So, yeah. Objective it's not that good a movie - but I still enjoyed it. So watch it with a few friends (and preferable some beer) and you will have a good time.