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"Document name is invalid. The index.xml file is missing

I have OSX Yosemite 10.10 and am having a problem just today in Numbers. A file that I have saved to my desktop and opened daily to input data since the first of November won't open. It gives me a message that the file is invalid, the "index.xml file is missing" Running Numbers '09 version 2.3 Have been run ing Yosemite 10.10 for quite some time. How can I open/retrieve the file?

iMac, Mac OS X (10.1.x)

Posted on Nov 15, 2014 9:20 AM

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10 replies

Nov 15, 2014 10:48 AM in response to buttejg

An original Numbers ’09 v2.3 document will save as a compressed zip archive that has its extension renamed .numbers. It contains an index.xml file. If you double-click this Numbers ’09 document, it will open in Numbers ’09 v2.3. This is contrary to how Pages v5.5.1 handles Pages ’09 documents.


You have to explicitly open a Numbers ’09 v2.3 document in Numbers v3.5. When you make a change, Numbers v3.5 will drop a sheet dialog that is very clear in its portent:


Would you like to upgrade this Numbers '09 spreadsheet?

  • Edit a Copy
  • Cancel
  • Upgrade


When you choose either the Edit a Copy, or Upgrade — and save your changes, the resulting document is now in the new document architecture whose structure no longer uses the index.xml file. Double-clicking this new document format will now default to Numbers v3.5 on open, not Numbers '09 v2.3. You have to explicitly choose Open with Numbers (2.3) from the contextual menu to get the pop-op below because Pages v5.5.1, Numbers v3.5, and Keynote 6.5 documents are not backwards compatible.


User uploaded file

Feb 1, 2015 11:58 AM in response to buttejg

Using MacBook Pro with OS X Yosemite (version 10.10.1): Created a new document with Numbers 3.5.2. Saved it in Documents. Closed the document. At a later time, tried to open the document. Opened Finder then double clicked the and received the following message: The index.xml file is missing.


My workaround was to "right click" the document and select "Open With" then "Numbers (default) (3.5.2)"

Oct 26, 2016 10:42 AM in response to buttejg

What I noticed was the upgrade happened but the icons in the bar at the bottom didn't change. So, your trying to open a new doc with the old software and it can't find the index.xml. If you right click open with the latest software, it'll open the software in your bar at the bottom with a new icon. Drag the new icon in place of the old one and swap the old icon out. Now your using the new software every time..... APPLE COULD HAVE THOUGHT ABOUT SWAPPING OUT THE OLD FROM THE BAR AT TIME OF UPGRADE BUT DIDN'T.... So, you need to do it manually.... Numbers, Pages both suffer the same fate.

Oct 26, 2016 11:43 AM in response to PeterBreis0807

Yet, you don't point out specifically anything... and comment that the post is a year old and so what, the problem affects folks as they upgrade these apps and the icons don't get swapped out for the new ones. I love my MAC, it's a great product. I don't love folks that say "Not quite right" but are to chicken to actually point anything out... Crawl back under your rock Troll....

"Document name is invalid. The index.xml file is missing

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