The supplied links do not allow a valid transformation. A scale factor is calculated from the coordinates in the link file. It is not permitted for the scale factor to be negative, so if the supplied coordinates would result in such a value, an error will occur. An example of this might be with Warp if an erroneous value is present in one of the source or target control points of the links.
Check that the control points in the link file are correctly determined and have been correctly structured.