Dunfermline manager Jim McIntyre described the award of a penalty against his side in the 2-1 defeat by Rangers as "a disgrace of a decision".
Sone Aluko was adjudged to have been fouled by Gary Mason and Nikica Jelavic converted what proved to be the winner.
"It's never a penalty in a month of Sundays," said McIntyre.
"The referee's in a great position. It's just not a penalty. There's no contact at all. There's three players round him and it's a dive."
Referee Steve Conroy pointed to the spot when Rangers were already a goal up through Alex Keddie's own goal, the ball rebounding into the net off the defender's head following goalkeeper Paul Gallacher's clearance.
"He (Aluko) is obviously trying to get his team into a lead," said McIntyre.
"I'm not going to blame Aluko, the bottom line is the referee's there to spot these things and he's got to do his job and he didn't did it today.
"That (the own goal) was a poor one from our point of view, I don't know that there was a lot of distance between Gallacher and Keddie for Paul Gallacher to get the ball up, I would need to see that again.
"It smacked off him, went into the corner and it was a horrible way to lose the first goal."
Joe Cardle pulled a goal back for Dunfermline and Keddie missed a late headed chance to level.
"In the first 20 minutes, it was all Rangers and we were sitting far too deep," said McIntyre.
"The boys grew in belief as the game went on and obviously when you score a goal then that helps.
"Keddie's got to score. It's a great ball in, he's free and he's got to score.
"They're chances that, when you come to places like this, you must bury because you don't get many so you need to make sure you hit the target when you do."
Dunfermline slip to second-bottom in the Scottish Premier League, a point above Aberdeen.
"We're well in about it," added McIntyre. "What we've got to do is make sure we're not gifting goals."