Bug in bonus mission Inqueest

[Rork]

Hi.
In the bonus mission Inquest from the Elven Legacy: Siege add-on, you can summon with your mage a shadow mage that lasts for 5 turns. However, if you do this, two bugs happen:
1. Your own unit gets a 5 turn timer on it which kills your unit (and makes you lose the mission) when it runs out;
2. Your own unit can't activate any of the quest hexes, thereby making the mission impossible to complete.
There is an unofficial Russian patch, but I can't find it anywhere. It would be very much appreciated if someone could upload it for me or e-mail it.
(And yes, I know there is a way to complete the mission even with this bug, but I'd like to play it the way it was intended and not reloading and relying on dumb AI behavior.)
Many thanks in advance for any help.