Hey RND if ObjectDock2 Beta, this is all you now need at end of .ini
[Extras]
PlusImage=image name.png
MinusImage=image name.png
If still using 1.9 then the path is needed as
PlusImage= backgrounds\skin foldername\image name
Folder must be in the backgrounds folder in ObjectDock in Stardock in Program Files.
For separators you need this in .ini so OD knows how to draw them
[Separator]
Image = sep.png
TopHeight = -25
BottomHeight = -3