Open and save attachment 81684 [details] again as DOCX in Writer. Extract [Content_Types].xml, and note the following XML element: <Override PartName="/word/diagrams/drawing2.xml" ContentType="application/vnd.openxmlformats-officedocument.drawingml.diagramDrawing+xml"/> The original DOCX has the following instead: <Override PartName="/word/diagrams/drawing1.xml" ContentType="application/vnd.ms-office.drawingml.diagramDrawing+xml"/> The ContentType attribute, which is defined as an extension in MS-ODRAWXML is wrong after roundtrip: https://msdn.microsoft.com/en-us/library/dd910819(v=office.12).aspx The roundtripped file can be opened fine in Word, but LO should write the correct content type nevertheless. The document with the incorrect content type can't be opened with Open XML SDK 2.5 Productivity Tool. Observed using LO 6.0.2.1 / Windows 7.
Aron Budea committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=612ed5e752a0b317cf63a27ff1bb663a774022ef tdf#116301: write correct content type for diagramDrawing It will be available in 6.1.0. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.