Whenever I 'Save' a Word document, I get the Save As dialogue instead of just overwriting the file. Word has the correct filename of my document in the Save As field but it doesn't do the saving unless I then click the Save button. None of my files are 'locked' and I don't have autosave on. I've tried creating new documents, resaving old ones with different names ... it makes no difference. Any suggestions as to the cause?