>and those never caused extra trouble on Windows
(right?).
Right
So what's the difference between now and then?
That is the question.
Maybe this gives a hint: When using the tarball from 2013-08-06 the icons in the menus are also not correctly displayed!! When using the tarball form 2013-08-16 the icons in the menus are correctly displayed. But in the toolbar still not. If necessary I can try to narrow the gap to find out which day this behaviour changed.