My sorcerer cant cas his magic missiles.
The magic missile icon is grey.
Hes not wearing any armor
Spellslots say hes got 3 slots available but i cant add any spells to the slots.
any help is appreciated

For starters, the "grey icon" is in the 'magic bar' at the bottom of the screen when you're walking around or it is only visible when you enter in the spells book?

The "I have slots aviable but I can't learn new spells" thing buggers me, if you're playing an enhanced edition then thats bug Nº 172 on the list, unless I'm missing something here. :/