Hi, edward hage <edha@xxxxxxxxx> writes: > gchar *labeltext1; > > g_snprintf(labeltext1, 6, "%f", sim.stepsize); > > g_free(labeltext1); I suggest you read the snprintf() manpage. You are using g_snprintf() on unallocated memory and later you even free the memory that has never before been allocated. Sven _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list