[iText-questions] PDF Signatures

[Liem Do]

Hello,   I'm having some problem trying to sign a signature form field in iText. I'm using the signature.java example file as is and when I click on the signature field to sign it using a self signed signature, I get the following error when saving the file:        "The document could not be saved. There was a problem reading this document (123)."   This is for Acrobat Reader 4.0   For Acrobat Reader 5.0.5, 5.1 and Adobe Reader 6.0, Clicking on the signature field does not give me the option of signing the field. Do I need any additional plug-ins to make this work or is it that the acroForm.addSignature() method not work at all? Thanks for any help in this.   Liem