I've created a form that is filled in by the user and then emailed on to
their manager for approval. I've added a signature field so that a
digital dignature can be applied, however every time I sign the document
I'm told that the signature is invalid and the reason is that the
document was modified in an unauthorised manner since previous signature
was applied.The document has not been modified, other than signing it.
I'm using a valid certificate to sign with (I tried on another pdf, NOT
creat...