You are not alone on this one. I have the exact same message (msgr??32.dll)
all the time. I do not know what it means or why it happens. It seems to be
completely random. Contrary to what many will say it has absolutely nothing
to do with Tools > Language > Set Language... Instead, go to
http://support.microsoft.com?kbid=273965 and look at "Method 4". It is the
only one that will work. Copying directly into a new Word Document will not
work as it seems to retain the previous attributes (disabled spell check);
there has to be another step in between (in this example, Notepad).