Colin Rafferty <craffert(a)ms.com&gt; writes: Is the SGI running unix or NT? We must investigate the type of the actual ClientMessage XEmacs receives. I append a patch which will output some debugging data. Please apply it and send it's output (goes to stderr) to me. So the NT station is only displaying a window from the SGI running unix? The path will modify the function above. Weird: normally a client message is identified by an X atom. DndInitialize will get/create this atom for XEmacs. All x_event_to_emacs_event does is to look if this atom is also in the received ClientMessage. To get such an error, there must be some fault in the allocation/use of this... we will see. Regards, Oliver.