Mark Yates blasted referee Fred Graham for a pair of penalty decisions he felt cost Cheltenham victory against Burton.
Goals from Jamie Cureton and Byron Harrison put the Robins 2-0 up before Terry Gornell was booked for diving in the penalty area.
Burton were then awarded a spot-kick of their own in first-half stoppage-time when Russell Penn was adjudged to have handled Billy Kee's shot and the striker stepped up to restore hope for the Brewers.
Rory Delap levelled in the second half as it finished 2-2 at the Abbey Business Stadium, with Yates left seething.
"I spent two hours at a managers' meeting at Walsall recently, with half an hour spent on handball decisions and how the referee has given that one against Russell Penn I will never know," Yates said.
"We should have had one too, but he booked Terry Gornell for diving and he got them back in the game.
"It was a clear penalty because there was a noise and a contact. Maybe the referee was ring rusty, but Burton got away with it and credit to them for fighting back.
"Their first goal deflated us for some reason and the second goal from a set piece was pretty awful.
"It was two decent teams and we are disappointed the referee has influenced the game."