I'm playing 1.5 version on Win7. Problem is simple. No summon spell works. Nothing appears after I summon. Not from scrolls, item invokes, nether spells, celestial spells. There's always the hand movement and then ... nothing. Even with 10 points in the respective spell schools. I'm slowly pulling all my hair out. Am I overlooking something extremely simple? I hope somebody will put me out of my misery.