The landing curve of the seam overlaps the landing curve of another seam. This creates potential issues when attempting to split.
The boundaries of the seam are not correct or the seam has the wrong solution chosen if it is ambiguous.
What You Should Do
Separately try each of the following steps:
Select the row in the Results dialog box. The point where the two affected seams overlap is shown in the graphic view.
Verify that the two seams have the right boundaries chosen and if the seam is ambiguous, verify that the right solution is chosen.
Click Recompute in the Results dialog box to recalculate the object.