Hi,
this is new to me, I regularly tag files while open in MS Word 2003 (Office is a "special friend" when it comes to tag2find, regarding the way documents are saved by it...).
I never encountered the error message you describe, we will definitely look into it. You have not by any chance installed Office 2007 lately (I had not chance of testing tag2find against it yet) (yes, you wrote MS Word 2003 doc, but just to be sure

).
Anyhow, we will look into this issue and try to find a fix for it. Thanks again for your ongoing good feedback!
Best regards,
Martin