When trying to export to output format PDF using the IFRDocument::Export method, you may receive this error message:
8044 :16:44:17.985, 80 ms, IFRDocument::Export( (BSTR)"c:\temp\userFRDocument.pdf", FEF_PDF, (structIUnknown*)0xe09c354 )
8044 : The image could not be exported.
This error may occur if you have called some API to edit/modify the image but forgot to call IFRDocument::Synthesize() method before exporting to a pdf file.
To resolve the issue, call Synthesize method first and then Export.