When I use Acrobat 6.0, click the signature and hit "e;Signature Properties"e;, I get an "e;Acrobat error. Bad parameter."e; Why?

Try to assign the non-empty value to the ElPDFSignature.AuthorName property. Though this property is marked as optional in PDF specification, Adobe Reader 6 fails to validate signatures with empty AuthorName (this error is fixed in Adobe Reader 7).

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