[Xquartz-dev] X11-2.3.0_rc4.pkg - X protocol error

Hi, I'm running with Leopard 10.5.3 on a MacBook Pro. After installing X11-2.3.0_rc4.pkg (I'm not sure whether this already happend with X11-2.3.0_rc3.pkg) I experience a reproducable crash of emacs when running it on a remote machine. I ssh to that machine, then start emacs and as soon as I try to mark something with the mouse (i.e. moving the mouse with left mouse button pressed) emacs crashes with the following error message: X protocol error: BadWindow (invalid Window parameter) on protocol request 38 Because of this problem, I would like to revert back to 2.2.1. Can I just install the 2.2.1 package over what I have now? Best wishes, Alexander