"I am delighted with the performance and the game plan worked again, but unfortunately you can't do any amount of training for errors like the one that happened," PA quotes Beattie as saying. "Dean's devastated, but apart from that, he played a magnificent game as I've told him.
"We have come to Chesterfield, who are top of the table, and we are expected to get beat, but we have played some really good football and made them change their formation because we were causing them problems.
"When we came off, [Chesterfield manager] Paul Cook said no team this season has caused them the problems that we did. We are disappointed in the result, but the performance was a good one and we can't be too disheartened."
Accrington make the trip to Hartlepool United next Saturday.