I can't be sure, because I've never run into this before, but it almost
sounds as if you've protected your normal.dot template somehow. To check
this, check Tools - Options - File Locations to find the location of your
user templates. (You may need to click on "modify" to see the entire
pathway, but DON'T modify anything. Close without changing anything.)
Then hit Ctrl - O to open a document. Under "Files of Type," select Document
Templates. Navigate to the directory that contains your user templates and
open normal.dot.
Click on "Tools" and see whether "Unprotect Document" appears. If it does,
click it and save the template and close out of Word.
If "Protect Document" appears under Tools, do NOT click it. I guessed wrong
and you should close out without saving anything.
I hope this helps.
Fred