Ball of lightning not working?

[Petwin]

I've stopped playing AP for over a month ago (things to do, places to be..). I started her up again to find the pet dragon ability Ball of lightning broken. When I select the ability an go to an enemy stack the pointer turn to a question mark and clicking gives me the detailed info on the stack.

I've got the Steam version of the game and the rest of it seems all right.
Any ideas?

[Zechnophobe]

You don't case ball lightning on a stack, but rather on an empty square, and then it moves to where it thinks it will do the most damage.

[Elwin]

Ball of lighting is not just a direct damage spell, ots more like summon so u cant place it on other unit ;p

[N3MES1S]

Ball of lighting attacks 3 turns, so its not a single troop cast ability, u need to cast it on a empty square near the troops u want to be damaged. Ball of lighting will attack random troops on each turn and it is supossed that the troops targeted are troops with high numbers stack.

[Petwin]

Thank you Thank you Thank you. How could I forget this?