I have a LiveCycle Designer dynamic PDF I've designed with two places for two different digital signatures. The form is reader enabled. Both signatures are in dynamic sections of the form, that may or may not be required depending on the answers to the questions above those subforms. I do have the signatures set to lock only "their" section, and not all the fields in the form.
The user who would sign in the first subform is reporting he receives a "FieldMDP" error when he tries to apply his digital signature, and the form will not sign. I haven't seen the error myself (he's in a different building) and I can't duplicate it. I've looked online for answers, but most of the answers I see say to reader enable the form -- it is.