You can do a registry entry to stop this problem. I did a quick google search for the relevant instructions and found these links.

https://support.microsoft.com/en-au/kb/2528748
http://www.thewindowsclub.com/fix-pl...office-message

Note that Word 2007 has a version number of 12.0 so you would need to use that number instead of the 14.0 which is relevant to Word 2010.

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Andrew Lockton
Chrysalis Design, Melbourne Australia