Editor is previewing sprites with half a width.. why?

Hello guys!

It has been a while since I used Construct 2 ... then I upgraded to this latest stable version. Now I am doing a simple thing as placing a sprite. The problem here is that the editor e previewing every image with half of its width. It also happens with tilemaps.

Any ideas of whats is happening? Am I missing any configuration?

Thanks!

Make sure you've installed the latest graphics drivers for your hardware, as this could be related.

That is weird.... I have installed a Intel HD Graphics 3000 driver (version 9.17, 05/27/2015). I couldn't find any topics related to this issue around here.. =(

I have noticed one thing... only sprites over 1500px are acting this way ...