Russ,
Im using 2K5 here and using the RText creates problems with different versions of CAD.
Basically it comes down to having the Express Tools loaded, which (im assuming) Architectural Desktop doesnt.
When you upgrade to 2K5 this should eliminate the problem internally, but if you send drawings out to people who dont have the express tools loaded will get the box again. The only way ive found around this is to explode them. Which defeats the purpose of the rtext anyway!!!!
Hope that helps