Sorry my question...
how can I delete a yet created folder in the "Sprite Manager" editor or a dialog in the "Dialog editor" of a Room? There are also many other things (but now i don't remember) which i can't delete because there is no a button of that kind (DELETE). So?
in version 2.55 you can't delete sprite folders. See this topic :
http://www.agsforums.com/yabb/index.php?board=2;action=display;threadid=6684
In 2.56 you CAN delete the sprites, you can either download the beta now, or you can wait till its released. I suggest you do the second ;)
I dunno about the dialogs...
Thanks! ^^