We are exporting image documents as pdfs to a file via the SDK, using this command:

                LF_DocExporter.ExportPdf(LF_DocInfo, LF_DocInfo.AllPages, _
                                         PdfExportOptions.None, sExportPath)

For a few thousand (non sequential) documents, we got one of the following two errors:

"EOL code word encountered in Black run.", and "EOL code word encountered in White run."

Some quick research pointed to an issue within the tif file itself, as each horizontal line switches from white to black, and vice versa.

The document views without issue in the browser for both the full page and the thumbnails.  It can be exported manually as either a pdf file or as a multipage tif file without trouble.  The individual pages all appear to be bitonal, at least on one example we viewed. What is it about the SDK that is different?  Or is this a matter of picking a different set of export options? 

TIA -