In menu Add Gallery / Images, the button 'Choose files' (if that is the correct translation) does not work when using de IE 10 browser. If I switch the IE browser-mode (F12 -> Browsermode) to IE 9, the button works.
I tried to force the compatibility with
<meta http-equiv="X-UA-Compatible" content="IE=9"> in the admin-head but this didn't work.
Can you please help me?