请问如下是什么错误？是在运行是出现的

jiangyong

(gnomemeeting:1428): Gdk-CRITICAL **: file ../../../gdk/x11/gdkwindow-x11.c: line 2826 (gdk_window_set_icon_list): assertion `GDK_IS_PIXBUF (pixbuf)' failed

(gnomemeeting:1428): GdkPixbuf-CRITICAL **: file ../../gdk-pixbuf/gdk-pixbuf.c: line 371 (gdk_pixbuf_get_width): assertion `pixbuf != NULL' failed

(gnomemeeting:1428): GdkPixbuf-CRITICAL **: file ../../gdk-pixbuf/gdk-pixbuf.c: line 387 (gdk_pixbuf_get_height): assertion `pixbuf != NULL' failed

(gnomemeeting:1428): GLib-GObject-CRITICAL **: file gobject.c: line 1337 (g_object_unref): assertion `G_IS_OBJECT (object)' failed