Forms - submit button doesn't work right when windows users reply to mac-generated form

[fine_print@adobeforums.com]

I created a form with a button to automatically return the form to me. The return function works on my mac computers but when I send it to windows users they get error messages when they try to reply -- "This operation is not permitted" and "the file is read only and protected". I use an intel based mac and I'm using Acrobat professional 8 for mac.
When I set up the action I put that I wanted the whole pdf returned, but when another mac on my network returned it to me it said it was returning data only.

[Aandi_Inston@adobeforums.com]

It sounds as if you have not made sure all users have Acrobat. The
free Reader can't return the whole file.

Aandi Inston