If an icon for one of the config center modules is missing, a default one should be assigned (otherwise everything falls out of place, becomes ugly very fast).
but it's there. The "default app icon" should be used. See razorqt-config/src/mainwindow.cpp, line 152.
Does your icon theme contain "application-x-executable" icon?
Probably not, it was a broken theme. Is it reasonable to include a hard fallback in razor for it too?
if this are hard to do, must close and focused in bug only issues