A data frame has been specified whose dimensions are orthogonal to those of an already processed frame for this reduction.
The most likely cause is that one of the frames has been rotated and the other not. The required frame geometry for the package is to have the orders long axis aligned with the horizontal (X-axis). The solution is to ensure that all frames are consistent and then re-start the reduction. In the case that the first frame specified needs to be rotated then the reduction process must be re-started from the beginning using a new reduction file (delete the current reduction file). In the case that that the first frame specified was OK, then simply correcting the other frame and continuing with the reduction will suffice.
Martin Clayton