For some reason, my co-worker is unable to edit these test procedures from the CM system, and has to request a special "unlocked" version from CM. When I download these documents and open them, all I get is the above message and a big friendly "Edit Anyway" button. We were trying to figure out why. He has Word 2007 while I have 2010, and that seems to be a likely source of the difference. In the end, it was easier just to get CM to send copies of the documents, but here are some barely-perused links on the subject:
This didn't seem to apply; in his version the "protect" drop-down panel has only one button, not two as shown here:
http://office.microsoft.com/en-us/word-help/allow-changes-to-parts-of-a-protected-document-HA010372706.aspx#BM3
The folks in this forum are all about trying to find a special "unlock" button for forms that was prominently placed in Word 2003 (I've never had an occasion to use it; maybe it's related to our issue, maybe not):
http://help.lockergnome.com/office/UNLOCKING-FORMS-WORD-2007--ftopict932726.html