The visitors went in front in the 7th minute when ex-Don Bryan PRUNTY took advantage of a Ryan O'Leary mistake to shoot past Preece. The Dons were forced into a 23rd minute change when Markus Paatelainen hobbled off with a foot knock to be replaced by David Donald.
With twenty minutes of the game remaining, Aberdeen deservedly levelled when Jamie WINTER shot through a ruck of players from fifteen yards.
Three Dons, O'Leary, Andrew Considine and John Stewart, were yellow carded by referee Steve O'Reilly.