As King Aeetes and his men watch the skeleton warriors emerge from the ground, Aeetes cries out as each one appears. But at one point, as a skeleton emerges, Aeetes is plainly seen mouthing something (probably "And still more!"), but his voice is not heard.
Before Hylas hurls the discus, he hands his pack to a bystander. After hurling the discus, he is shown in close-up with the pack still slung over his shoulder. In the following scene, the pack is once again missing.
When Hylas and Hercules see the statue of Talos, they are standing in grasses, then there is a long shot of them walking, but the next shot shows them still in the grasses. The next shot shows Hylas walking, then in sand, then back in the grasses with Hercules again.
Just before their fight with the skeletons, Jason and his two companions remove the leather straps they're wearing across their chests. In the immediately following close-ups of Jason, he's still wearing his.