At the end of the document titles the letters are now, “.docx” previously they were “odt” but I they used to be DOC

You said.
• change the Trust Centre settings;
• open the files and save them to the newest format supported by your system (via File|Save As); then
• restore the Trust Centre settings.


When I click onto “Save as” I’m not sure which one to select.
Open Document Text (*.odt)
Word Document (*docx)
Word macro-Enabled (*docm)
Word 97-2003 Document (*doc)
Word Template (*dotx)
PDF (*.pdf)
XPS Document (*.xps)
Single File Web Page (*.mhtml)
Web Page (*.htm;*.html)
Web Page, Filtered (*htm;*.html)
Rich Text Format (*.rtf)
Plain Text (*.txt)
Word XML Document (*.xml)
Word 2003 XML Document (*.xml)
Word 97-2003 (*.doc)
Word 2000 (*.wps)
Works 4.x (*.wps)
Works 6 – 9 Document (*.wps)
Works 6.0 & 7.0 (*.wps)
Works 7.0 (*.wps)

When I open "Save as" I see the following and am not sure which one to select.
Open Document Text (*.odt)
Word Document (*docx)
Word macro-Enabled (*docm)
Word 97-2003 Document (*doc)
Word Template (*dotx)
PDF (*.pdf)
XPS Document (*.xps)
Single File Web Page (*.mhtml)
Web Page (*.htm;*.html)
Web Page, Filtered (*htm;*.html)
Rich Text Format (*.rtf)
Plain Text (*.txt)
Word XML Document (*.xml)
Word 2003 XML Document (*.xml)
Word 97-2003 (*.doc)
Word 2000 (*.wps)
Works 4.x (*.wps)
Works 6 – 9 Document (*.wps)
Works 6.0 & 7.0 (*.wps)
Works 7.0 (*.wps)
My apologies for being so inept and using so much space.