Word Export


In a Winform application in c#, I have the following error :
an error occured during export : (e.g. no access right to destination path, file to be exported already exists and is write protected).

Word 2013 is installed on the PC.

Here is the code :

string exportFileName = saveFileDlg.FileName;
LlExportTarget exportTarget = LlExportTarget.Docx;
ExportConfiguration exportConfiguration = new ExportConfiguration(exportTarget, exportFileName, projectFileName);
exportConfiguration.ShowResult = true;

Thanks for help