When Fred, Debbie, Mark, and Tinker went to the Hall of Records to help find Shaggy and Scooby, Daphne and Velma were seen in the Mystery Machine, but Debbie left them at the Hall of Records.
When the sheriff took the plans of the bank presidents to change Winona, the back was blank. But in the next scene, it has words on it.
At times, the sizes of the different characters are out of proportion with moments where Speed Buggy looks smaller or larger than the other characters. Speed Buggy appears smaller when he is required to be appear in an indoor setting but larger in an outdoor setting. Also, there are only two seats on the car but it can fit up to four-five people.
In one scene, Speedy Buggy's eyes were black instead of blue.
In many of the scenes throughout this entire episode, if one looks very closely, Daphne's mouth moves, yet Velma is talking.
There were four Windmakers, P.J. and his three unnamed henchmen, but when they show P.J. unmasked at the end right before he tries to flee, there are four Windmakers behind him with their masks still on, all tied up, instead of three. There were four Windmakers total, not five.
While the town was partly abandoned, it seems odd that the town's council or government left the Hall of Records wide open for anyone to enter at their leisure considering very important documents are supposedly kept there.
In one of the cave scenes where Speed Buggy and Shag and Scoob are standing on either side of the cave wall about to turn the corner and bump into each other, there is a production number/signature that reads 426 in the bottom right hand corner of the screen.