Franz Steinhaeusler wrote: > Is it really an instance of wx.Frame? > What do you get, if you make a "print self" statement? sovled it I think it is an installation problem. I used yum on FC6 to install wxPython 2.6 But after that I got that error. Now I uninstalled them and did an installation of wxPy 2.7 manully. It is ok now..