With their tails up, the youthful Dons pushed forward looking for a second but the home side hit back with a goal Ryan Esson will want to forget. A Scott Wilson flick from an De Boer corner squirmed out of Esson's hands with MOLS on hand to knock the ball over the line from little more than a yard.
Mols should have added a second less than a minute later when he hit the bar from four yards out.
In the second half, substitute Billy DODDS put the champions ahead when he deflected a Barry Ferguson effort past Esson. Robbie Winters should have brought the Dons but his headed effort from an Andy Dow cross went wide.
With the Dons pushing for an equaliser Jorg ALBERTZ put the result beyond doubt when he lashed the ball high past Esson after good build up play by Dodds.