Cannot open .docx from a Windows 8 machine. I am using Windows for Mac 2008
I have Mac OS X 10.6.8 and I am using Microsoft Office for Mac 2008. My colleague recently upgraded her PC to a Windows 8. Now I can't open any of her documents on my Mac. See the key part of the message below. I've tried unlocking the document. Someone else with Microsoft Office for Mac 2011 did manage to open this document. I have a Windows 8.1 laptop and have no problems opening documents I save on that on my Mac. Help gratefully received, but please note I am not a technician!
Mac mini (Late 2009), Mac OS X (10.6.8), Using Microsoft Office for Mac 2008