"What can you say about this result other than it was sheer bad play from us for their winner," Robson said after the 2-1 defeat.
"It's happening way too often with bad goals that we concede. If you keep doing that you will not pick up points in the Premiership.
"The build-up for their penalty was just woeful from our point of view. We had so many chances to play the ball forward and you cannot afford to do that.
"It is not rocket science to say that the goal was shocking. We were breaking on them well in the last 10 minutes and could have scored. A point would have been great for us."