When an animation looks 'jumpy', it's usually because the contents of each frame are not perfectly lined up with each other. You can use the Onionskin tool in Animation Shop to preview how each frame of the animation aligns with the adjacent frame. Clicking the yellow Onionskin icon will overlay a transparent copy of the next frame onto each frame.* Another reason an animation could look 'jumpy' is because more transition frames are needed to smooth out the action. Export your frames to PSP to create some new frame-layers with 'in-between' movement.
Onionskin Preview temporarily superimposes a transparent overlay of frame 1 onto frame 2; frame 2 overlays frame 3; etc, for all frames.** Zoom in to see how contents of one frame line up with the next and use the Mover tool to make small adjustments to pixel alignment that may correct the jerkiness of movement. If major adjustments are needed, you may have to export frames to Paint Shop Pro to fix!
*Clicking Onionskin icon again will turn overlay off.If your jumping pixels are due to stray pixels or pixels that are the wrong color...refer back to top for list of topics!