abnormal error on execute app

Hi guys,
    when I start my app, I will receive this error ( that i never seen ):

(python:6608): Gdk-CRITICAL **: gdk_drawable_get_image: assertion `GDK_IS_DRAWABLE (drawable)' failed

(python:6608): Gdk-CRITICAL **: gdk_image_get_colormap: assertion `GDK_IS_IMAGE (image)' failed

(python:6608): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
The program 'python' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAlloc (insufficient resources for operation)'.
  (Details: serial 192499 error_code 11 request_code 53 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

Any idea???

thx

···

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/\/\ariano Di Felice
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