Khohloma,
sometimes it is necessary to "turn" the page of the spellbook, it is just a graphical update problem, then spells will appear on the first page.
If the problem still persists and you are using 1.04 version, go in-game press F11 and send me the zipped "Debug" folder together with your savegame please.
Also, the mod received a silent update two weeks ago. I recommend using this.