Up to this afternoon I was able to sign my documents with an advanced signature by Signtrust (Acrobat 11.0.10, Win 7 32 bit). Suddenly, without made any changes, I get the message "Die für das Unterschreiben ausgewählte Referenz ist ungültig" (engl. "the choosen reference for signing is not valid"). Signing with other tools or Acrobat 9 is still possible.
↧
