I am working on my new additional iconset using my older iconset (S-DOX) as template and replace icons with newer ones.
When switching between these two sets (removing the older, install the newer and otherwise) some icons won't be replaced correctly (smileys instead). For example a three-button shows 2 icons correctly, but one is smiley.
The only difference between the sets is the iconset-name and that I've removed a few icons (also in xml) in the newer one. Names for icons are the same.
Edit: The three-button example uses the same icon (go openinleft/-right).
Your buttons must refer to the full icon-set + icon-name, rather than just the icon-name on its own.
What you select in the "use internal icon set" drop-down will affect whether the button refers to just the icon-name (in which case it will be loaded from the first icon-set in the list which includes an icon with that name), or to the icon-set + icon-name (in which case it will only be loaded from a specific icon-set, and turn into a smiley face if that set isn't present or doesn't have the icon).
So there is a difference when selecting an icon from desired iconset or from combined iconset? Always thought that it is just a view-option, so I have to use the standard-option (show all) if I understand right.