I have created a new Adobe Acrobat form using Live Designer, and have created a digital signature field. When I playtest it on my Acrobat Professional, it works fine. When I send it to another user that has Acrobat Professional (but an older version), it works fine.
When I send it to a user that has a brand new, fresh Acrobat Reader 7.0.8, clicking on the field to add your digital signature does nothing. No error, no security warning, nothing. It just kind of blinks for a second and nothing else happens.
I have also tried making a whole new form with only the digital signature field, still has the same problem.
I've had a hard time finding any solutions or even other people who've had this problem. Any ideas?