Using iMac OS 10.8.3, Numbers 2.3 (09) can not save document, gives this message: The document ....could not be saved. Also, it can not be autosaved, if I try save as, same problem, suggestions?
Try File > Export > Excel. At least that will save your work. Then open the Excel doc in Numbers.
Or File > Export > PDF.
Hope that helps.
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