"Of course the people are angry," International Olympic Committee member Chang told Reuters television . "If your athlete got a gold medal and put the flag probably of some other country, what happens?"
The match against Colombia at Glasgow's Hampden Park on the first day of action at the London Olympics on Wednesday, two days before the opening ceremony, was delayed by more than an hour.
North and South Korea have been bitter enemies since the 1950-53 war. They have also been drawn against each other in the first round of the men's table tennis.
"The organising committee has taken corrective action and there will be no repeat. It was a simple human mistake," he said.
Speaking to reporters at the Olympic Park, Cameron said the government's priority was to ensure a safe and secure Olympics.
"NOTHING TO CHANCE"
"This is the biggest security operation in our peacetime history, bar none, and we are leaving nothing to chance," Cameron said. "Obviously the biggest concern has always got to be a safe and secure Games. That matters more than anything else."
Security has been an over-riding concern for the government and Games' organisers after four suicide bombers killed 52 commuters in London the day after the British capital was awarded its third Olympics in 2005.
"It's amazing, look, people are hanging out of the windows to watch. The country has always been enthusiastic, it's just the newspapers that have been against it," said 61-year-old sales assistant Ulla Davis.
The IOC elected Britain's Craig Reedie and Moroccan Nawal El Moutawekel, the 1984 Olympic women's 400 metres hurdles gold medallist, to its two vacant vice-president's positions.
