Strange thing with a Dummy that have Material assigned

Can you merge that dummy into an empty file and post it here?
It'd be great if we could have a look.

custAttributes.count $ BaseObject:true
0
custAttributes.count $ BaseObject:false
0

The file is joined!

I think I've found a tip :

http://forums.cgarchitect.com/32134-how-delete-all-materials-one-go-material-editor-2.html

1. select an object within the Command panel
2. select the Utilities panel
3. click the More button
4. select UVW Remove
5. click the Materials button

But "UVW Remove" doesn't work in that special case.

can't create yout problem, so difficult to help.
how did you do it?

print $.material
undefined
$.material = Standard()
Standardmaterial:Standard
print $.material
undefined
$.material = Standard()
Standardmaterial:Standard
$.material
undefined

That's the copy of the Maxscript Listener windows. But I've not copied it correctly, sorry! Here is the correct one.

print $.material -- input
StrangeMaterial:Standard
StrangeMaterial:Standard
$.material = undefined -- input
undefined
print $.material -- input
StrangeMaterial:Standard
StrangeMaterial:Standard

I've put the material value to undefined, but it is not applied. I don't known how the material has been applied to the Dummy, but if I can remove it without replacing by a fresh new Dummy.

that unique event deserve to be sended to Autodesk! :)
but out of the joke, is there some custom attributes on that dummy?

I don't see any custom attributes on this Dummy, only the Material one.

Select the object and run in the Listener this 2 commands one by one. Only if both return 0 then there no CAs.

custAttributes.count $ BaseObject:true

custAttributes.count $ BaseObject:false