About "Notes error: ...Allowable Authors..." message, help please

Hi,I have a notes database which has been run long time, today one of the new user start to use this system, when she try to compose a document, she got the error message:

“Notes error: You cannot update or delete the document(s) since you are not listed as an Allowable Author for this document”.

There are not reader or authors field on the form, and the user was given editor access.

The question is why other user does not have this error, only for her?

Thanks for any help,