When you use the toPS2() method from LiveCycle ES2 to convert PDF files to PostScript, checkbox marks are rendered differently in the resulting PostScript. For example, the checkbox marks are larger in the PostScript file than in the PDF file.
This issue has been addressed in LiveCycle ES2 SP1 and later versions.
A bug in the rendering functionality during the PostScript conversion causes this error. This problem causes issues for customers who convert legally binding documents, and must guarantee that they haven’t changed since they were completed or signed.