Goofs

When Terry is kidnapped, it is the middle of the day, while at the same time Danny and Frank are in the kitchen and it is 4:45 am.

When Danny and Frank are coming back into the attic from the balcony, Frank is on Danny's right. In the next shot, he is on his left. It would be impossible for him to move that fast since he is handcuffed.

During the fight between Danny and Al-Red (dressed as the Lemonade Clown), both guys end up submerged several times under the water in the fountain (which contained the explosive chemical in the water) but yet only Al-Red suffers the effects from drinking it either. Danny was unaware of the fountain containing explosive water in it, and was submerged, so in all likeliness Danny should've suffered the same affects as Al-Red and exploded also. Before they fought, Danny saw Al-Red trying to push the lemonade cart into the fountain and deduced what he was trying to do. He stopped him from getting the cart into the fountain but they both fell in. During the fight, he held Al-Red's head under water where it was shown he inhaled water, which led to the explosion.

After Danny puts Al-Red (who is going through the effects of drinking the explosive water) into the wheelchair, he pushes him into one of the stands where he explodes shortly after. If you pay close attention to the shadows on the stands and the background buildings, you can tell that the shots were obviously filmed at different times of the day, but spliced together.

Pierce Brosnan puts a plug in a socket and the wall visibly moves because of an impending explosion this is a film set.