AecSelectDisplay is defined in AecArchx.lsp as:
(defun C:AecSelectDisplay ()
(setvar "CMDECHO" 0)
(if (= (getvar "TILEMODE")
0)
(command
"_AecDisplayConfigAttachR2")
(command "_AecDisplayConfigDefaultR2")
)
(setvar "CMDECHO" 1)
(princ)
)
So instead of calling it, you should call the true
commands AecDisplayConfigAttachR2 or AecDisplayConfigDefaultR2.
Cheers,
Peter Funk
API Product Manager
Building Industry Division
Autodesk, Inc.