Button bar icons

[m^2]

I guess that your resolution is set incorrectly, usually there's nothing right from power off, this should look like http://tcup.pl/tcup/screeny/001.png.
You can correct it via Appearance menu.
Each of 2 groups has buttons meant to be used with appropriate panel - and they are not the same. Some buttons (like "Go back") are the same in both groups due to Total Commander limitation, but it's likely that we'll get around it.