Word 2007 Translation Issue

I am perpetually nonplussed. This time it is more of an irritation than a critical issue, but I'm baffled by the symptoms and my google has not helped.

Sometime between the last semester and last Monday, Word 2007 stopped allowing the built in language translator to function on several computers and only partially function on others. (However it still works mine and a few others I checked) Mostly on student computers, the option is grayed out when you click review --> translate* to use the built in worldlingo.com translator. On other identical computers (same image/hardware) if you change the language, it then miraculously works. This happens regardless of the users admin rights.

I'm not aware of any changes, patches, or policies that would alter this setting and I know I did not purposefully disable it.

Does anyone have any suggestions or resources that might help me better investigate?

*I attached an image to better explain what I'm talking about.