Please see the autodesk.autocad.customer-files: I have written a small vba app that creates what we call a plot sheet. This plot sheet only has title block text, a few notes, a viewport and then a bunch of x-refs. Each individual drawing opens fine. But when I open up A1FPL_01 I get a fatal error. Using Arch Desktop 2004. The x-refs are over lays. I really appreciate the help.