Hi everyone,
I am a intellicad new user and tring to figure out intellicad's functions same to Autocad,
I want to package files in sheetset by using etransmit,
I hope all the XRef files can bind into each dwg file,
so I set transmittal setup and tick "Bind external reference"
but command bar give me a warning message "Null object Id",
and don't create any document,
here is my files(a sheetset .dst file and several .dwg files)
https://www.dropbox.com/scl/fo/1hxedlyw ... b5yv8&dl=0

can anyone do me some help?
thanks!

Answer myself, there is one Xref file had some problem and can't be bind in,
so I redraw a new graph to replace it and it works,
sorry for maybe disturb someone and thanks everyone's help.