I'm having an issue where I get this error. I've recreated the document over and over along with other simple documents and I continue to get this error. I've gone so far as to create a word document covert it to PDF using Acrobat Pro 9. Add 2 fields and apply the extended Features. When I copy this file to a memory stick or transfer in email and try to use it on another machine I get this error:
"This document enabled extended features in Adobe Reader. This document has been changed since it was created and the use of extended features is no longer available. "
Can anyone tell me why I'm having this problem???