I'm trying to save a Word document as .docx, but each time I click the 'Save' button the dialog reappears and asks me where to save the file. This only happens when I try to save it as a .docx file, any other format works just fine. I have tried pasting the contents into a new file, but the same happens.
I really need the functionality from .docx though, since there are quite a few formulas in the file.
The version I use is Word 2010.
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