I was having the same problem... Unfortunately the 'Documents and
Stamps' menu option didn't work for me either. I eventually had to get a
bit more creative and go outside of acrobat. I opened the file in
photoshop and printed it from there. Printed perfectly with the
signature on it. I tried every option I could think of inside of Acrobat
first, and nothing worked. Even saving the file as an image from Acrobat
didn't work. Photoshop worked fine though It's entirely possible that
other InDesign ...