try opening the original file in LiveCycle save it as a new file, then
try the "adobe acrobat pro rights save as" method on the new saved file,
I've experienced this after the file has been opened in another program
and it broke adobes digital signature on the file.
BR001 is right, save yourself all of the headaches that will be
associated with NOT having adobe acrobat pro.In addition to the rights
management of the forms it also has great debugging tools and will
really let you view the form as the intended audience will see it. (as
opposed to the viewer in LC ES4)Acrobat PRO DC is available for
US$179.88/yr and totally worth it.