Dagenham boss John Still pointed the finger of blame squarely at referee Iain Williamson after watching his side slip to a 2-1 defeat to new npower League Two leaders Gillingham.
The hosts took the lead in the first half through Leon Legge despite appeals for offside amid claims the ball brushed a Gillingham player's head, which resulted in a flag from the assistant - subsequently overruled by Williamson.
Dagenham battled back and at the second time of asking, Femi Ilesanmi hammered his side level soon after the break.
But three minutes after coming off the bench, Deon Burton tucked home his 11th goal of the season after Daggers keeper Chris Lewington was adjudged to have brought down Anton Robinson - another decision Still disagreed with.
"Two mistakes," he said. "The linesman says he's headed the ball, all our players say he's headed the ball, the referee says he didn't see him head the ball and the linesman's seen it.
"For the penalty, the referee says he hasn't seen that the fella got brought down, he can't have it both ways. We can't affect that we can only affect what we do, but without a shadow of a doubt I don't mean to have a go at referees because it's the hardest job but when they look at the DVD they'll realise it's two mistakes.
"The thing that disappointed our players was that their player said 'I headed it' but as I said we can't affect that. The referee is never going to change his mind but I understand frustration creeps in but you can't change it."
With Port Vale losing at home to Morecambe, Gillingham went top of the table for the first time since January and in doing so put their last home match - a 1-0 defeat to Wycombe - to bed.
"It was defending at its best, everyone to a man stood firm, stood their ground and reduced them to very few chances," said Gills boss Martin Allen. "When they got the equaliser we all know what could have happened but our players responded very well, they stepped up another gear.
"We decided to go with all-out pace with Cody and Myles, who were both fantastic and God bless Deon coming on I thought he was great, the substitutions worked really well out there."