Getting enabled extended features error when tring to sign a doc

[cperryCocoa]

Users reporting this error;

"This document enabled extended features in Adobe Acrobat Reader DC.  The document has been changed since it was created and use of extended features is no longer available.  Please contact the author of the original version of this document."

...when trying to sign a document... Note that it is not happening to everyone.

The "original" document is stored in Laserfiche depository and cannot be modified. So the users are saving a copy to their computer to fill & sign, before sending to supervisor for next signature.  Would this error happen if the user has a local copy pre-filled out and saved to their computer that they are using as a personal template?

[George_Johnson]

Is the document a form that contains actual form fields? If so, does it also contain digital signature fields?

[akgrimes]

I am also having this issue. 

Removing data bindings from all fields seemed to work initially. However, after some other changes to the form were made, and I resaved as a Reader Extended file with a new name, the error has reappeared. I've checked the form, and there are no data bindings on any field.

The date/time thing is not an issue -- all PCs are on the same network.

I cannot demand that everyone upgrade to the latest version of Adobe Reader.

Even after extensive Googling, I have no idea how to save a copy that disables the usage rights for Reader as Indiana Homeland suggested in another thread.

It's an extremely complex form, so I do not want to create a new form as Lund UK suggested in another thread.

Any thoughts? This is an extremely frustrating situation.