Why it shows me 'An error occurred!'? What could go wrong?
- Probably you haven't chosen a file which will be used for animation - then just select it in File: field.
- If you selected a file in From file: field, be sure that its structure is correct, the number of lines in file must be the same as the number of objects you are gonna animate.
- Probably any of selected objects don't have inserted keyframes, then just add a keyframe you need for all the objects which will be used for animation.