The "wordwrap" attribute doesn't work for buttons. Instead create a node in the button called: style . Then create a subnode in the style node and call it: BS_MULTILINE (all caps). Then refresh your gui, and the button should word wrap.
As another good rule of thumb, instead of naming your button name with the longer text, keep the button name smaller, but use the "windowtitle" attribute to enter in the longer text.
Another route you may want to try, is have a shorter text for the actual button, but use the "tooltip" attribute to give longer descriptions when a user hovers over the button.
