"I'm very disappointed with the result today, although I'm more disappointed about the manner of the result," he said after the match.
"I stressed how much we had to concentrate from the start but the two goals we gifted them gave us an absolute mountain to climb.
"Last week against Reading was good in the second half, Tuesday's performance was very good but today was a choker.
"This was always going to be a big test but we shot ourselves in the foot.
"If we go on conceding goals like that it's going to be a very long season."