Thanks for the reply - I am using VW10. The document started in 2010, so that shouldn't be the problem. But yes - "No object was chosen. Select the instrument associated with this accessory." is the dialog box I'm getting. Up to this point I had yet to insert accessories. I will try a new document and see if that works. You did mention - "Insert the instrument and give it a made up position name and unit number in the OIP"... the instruments have position names, but not numbers yet. I'll check that as well.