>>> app.init(c,screen)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "/usr/lib/python2.4/site-packages/pgu/gui/app.py", line 119, in init
    self.resize()
  File "/usr/lib/python2.4/site-packages/pgu/gui/app.py", line 95, in resize
    w.rect.w,w.rect.h = w.resize(width,height)
  File "/usr/lib/python2.4/site-packages/pgu/gui/theme.py", line 222, in func
    ww,hh = m(ww,hh)
  File "/usr/lib/python2.4/site-packages/pgu/gui/container.py", line 443, in resize
    w.rect.w, w.rect.h = w.resize()
  File "/usr/lib/python2.4/site-packages/pgu/gui/theme.py", line 222, in func
    ww,hh = m(ww,hh)
  File "/usr/lib/python2.4/site-packages/pgu/gui/button.py", line 83, in resize
    self.value.rect.x,self.value.rect.y = 0,0
AttributeError: 'NoneType' object has no attribute 'rect'