I have the following error details pop-up when I try to save an annotation text box to a document file that is already in the workflow:

How can I fix this?  Please help?

Error Code: 6000
Error Message: There was an error saving annotations.
Unknown error. [6000]

------------ Technical Details: ------------

LFSO:
    Additional Details:
        HRESULT: 0x80070057 (LFSession::ProcessResponse, LFSession.cpp:3748)
         (LFSO/9.0.2.660)
LF.exe (9.0.2.728):
    Call Stack: (Current)
        CLFDocument::LFSOUpdatePage
    Additional Details:
        Exception: 0x80070057 [6000] (The parameter is incorrect.) (CLFDocument::LFSOUpdatePage at LFDocument.cpp:2492)
    Call History:
        CLFDocument::GetNextDocumentId
        CLFDocument::GetNextDocumentId
        CLFDocument::GetNextDocumentId
        CLFDocument::GetNextDocumentId
        CLFDocument::GetNextDocumentId
        CTextView::GetTextAnnIDs
        CTextView::AskDeleteEmptyAnnotations
        CLFDocument::LFSOUpdatePage