I have developed a form with an email submit button. The button works fine for me and other users, creating an email in Outlook with the pdf attached. The probelm I am seeing is that for some users, the button does nothing at all. I have enabled usage rights, and as I said before, it works fine for some users. The only difference I can visibly notice is that when a working user opens the form, the header message says "Please Fill Out The Following Form". When a non-working user opens the form, the header message states something about printing out a copy of the form for your records. Basically, the button does nothing at all for these users. I'm at a loss here. They are on the same version of Acrobat. Any help would be appreciated.