During export operation of a document that contains signature fields the following error occurs:
System.InvalidOperationException: 'The signature was not properly initialized for external signing. The signing delegate is missing.'Resaving a document with Acrobat throws an error due to invalid Info dictionary in document trailer.
<w:sdt>
<w:sdtPr>
<w:text w:multiLine="1"/>
</w:sdtPr>
<w:sdtContent>
<w:r>
<w:t>Line 1</w:t>
</w:r>
<w:r>
<w:br/>
</w:r>
<w:r>
<w:t>Line 2</w:t>
</w:r>
</w:sdtContent>
</w:sdt>Error message:
System.InvalidCastException: 'Unable to cast object of type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Elements.Forms.FormFieldsTree' to type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfArray'.'