Copybase causing Aec application to load

Thought this was rather strange. This drawing
was started from an outsource file.

Command: _copybase Specify base point:
Select objects: Specify opposite corner: 3 found

Select objects:
Loading AecBase...
Loading AecUiBase...

Command: (vlr-remove-all)
nil

Command: (listdictionaries)
("ACAD_GROUP" "ACAD_LAYOUT" "ACAD_MLINESTYLE" "ACAD_PLOTSETTINGS"
"ACAD_PLOTSTYLENAME" "AcDbVariableDictionary" "AtrOffice")

Where is this application hiding?

 

I should add that the "AtrOffice" dictionary is one of
mine and has nothing to do with anything Aec apps.

 

1. Yes vanilla, I believe there is 1 enabler installed
LDT3OE.exe nothing to do with this particular job

2. ok

3.
("acadapp.arx" "acdblclkedit.arx" "acdblclkeditpe.arx" "acdim.arx"
"aceplotx.arx" "acetdcp.arx" "acetfpth.arx" "acetlodr.arx" "acetutil.arx"
"achapi15.dbx" "achlnkui.arx" "aclayerp.arx" "acmted.arx" "acpltstamp.arx"
"acspacetrans.arx" "acstd.arx" "aecbase30.dbx" "aeclb.dbx" "aeclm.dbx"
"aecloader30.arx" "aecluib.dbx" "aecmodeler30.dbx" "aecuibase30.arx"
"appload.arx" "edittime.arx" "fscreen.arx" "movebak.arx" "oleaprot.arx"
"rtext.arx" "vl.arx")

4. me either

 

1. Is this vanilla AutoCAD with the Object Enabler installed?

2. The AEC extension is ARX and wouldn't "neccessarily" create any
dictionaries.

3. What does (arx) return?

4. Don't know . . . sorry.

Just trying to give alternative search possibilities.

jb