Sometimes the rendering system if left on OpenGL can sometimes quit the application on you. Here's one way in trying to fix that.
If you are runing the game in a OpenGL rendering system then try the other option by switching it to Direct3D9. If that dosnt work, then try it the other way around here's one way you can change it. You can open up your Ogre.cfg notepad which is located in your Feral Heart folder (http://i1299.photobucket.com/albums/ag69/Youshallfearme2/a18a282f-13f2-4e45-a47d-f3ca2980da99_zpsbe5df2e7.jpg)
Change the top one to the opposite rendering system
(http://i1299.photobucket.com/albums/ag69/Youshallfearme2/b631f31e-5429-46db-ba56-a3fd7125b774_zpsd0a4dbf3.jpg)
If this doesn't work then restarting the computer also does work sometimes