OK, Thundercles, since you're so convinced that Corbon is wrong, perhaps you could clarify exactly which position you think is right. There have been a lot of posts in this thread, so forgive me if I'm asking you to re-state something you've already said, but I think all your claims so far are consistent with all of the following positions, so I'd like you to tell me which one you actually believe is true:
Example Attack:
Laurel of Bloodwood uses a Guard order to shoot a Scythe of Reaping (WoD silver treasure, blue-green-green, Sorcery 2) at a space containing both a Golem and a Beastman (one of them was moving through the other). She is 5 spaces away from the targeted space and rolls 4 range on her dice. Suppose Laurel wishes to spend both ranks of Sorcery on range and use her hero ability to convert excess range into damage, if possible (not optimal, but saves me the trouble of formulating multiple examples).
Option #1:
Because one figure in the space targeted by the attack is immune to Sorcery, Laurel cannot use the Sorcery ability on her attack. With only 4 range rolled and 5 required, the attack misses, and neither the Golem nor the Beastman is affected in any way.
Option #2:
The Golem is immune to Sorcery but the Beastman is not. The attack is treated as having 6 range against the Beastman but only 4 range against the Golem, and therefore the attack hits the Beastman but misses due to range against the Golem. The attack is considered to both hit and miss.
Option #3:
The Golem is immune to Sorcery, but determination of whether the attack is a miss or not is made for the attack as a whole, not per-target. The attack has 6 range and therefore hits, but the attack affects the Golem as if it had only rolled 4 range; therefore, the excess range (converted into damage) is considered to be 1 against the beastman but 0 against the Golem. The Golem is affected by the attack, but suffers no extra damage from Laurel's hero ability.
Option #4:
Same as option #3, except the "excess range" against the Golem is actually negative 1, so the use of Laurel's hero ability actually causes the attack to inflict less damage on the Golem.