problems with Xemacs 21.5.16 in Mac OS X "Panther"

I have successfully compiled Xemacs-21.5.16 for Mac OS X 10.3.2 (Panther), and installed the xemacs sumo package. Everything seems to work OK, except for two apparent bugs: 1) By default, "Active regions" is on (in the Options-> Editing menu). However, when I double click on a word or select text with the cursor Xemacs beeps, and the following cryptic message appears in the status bar: Symbol's value as variable is void: region 2) More annoyingly, when I select text (after turning "Active regions" off, otherwise I get error 1) and press the Delete key only the character next to the cursor is deleted, not the entire selection. This is so even when "Ovestrike" is selected in the Options-> Editing menu. For the record, both problems are absent when I revert to Xemacs-21.5.9 (installed via the "fink" package manager). The problems have nothing to do with my init.el or custom.el files, since I can reproduce them if I start Xemacs with "xemacs -q". Any help would be much appreciated! Cheers, Artemio Gonzalez-Lopez artemiog(a)mac.com P.S. Here's a report of my installation parameters: uname -a: Darwin hotrod.local 7.2.0 Darwin Kernel Version 7.2.0: Thu Dec 11 16:20:23 PST 2003; root:xnu/xnu-517.3.7.obj~1/RELEASE_PPC Power Macintosh powerpc ./configure '--site-libraries=/sw/lib' '--site-includes=/sw/include' '--prefix=/opt/local' '--with-dialogs=athena' '--with-widgets=athena' '--with-sound=none' '--with-database=no' '--without-ldap' '--without-postgresql' '--with-athena=3d' '--error-checking=none' XEmacs 21.5-b16 "celeriac" configured for `powerpc-apple-darwin7.2.0'. Compilation / Installation: Source code location: /Users/artemio/Downloads/xemacs-21.5.16 Installation prefix: /opt/local Additional header files: /sw/include Additional libraries: /sw/lib Operating system description file: `s/darwin.h' Machine description file: `m/powerpc.h' Compiler: gcc -Wall -Wno-switch -Winline -Wmissing-prototypes -Wsign-compare -Wundef -Wstrict-prototypes -Wpacked -Wshadow -Wmissing-declarations -Wpointer-arith -g -O3 Relocating allocator for buffers: no GNU version of malloc: no - The GNU allocators don't work with this system configuration. Window System: Compiling in support for the X window system: - X Windows headers location: /usr/X11R6/include - X Windows libraries location: /usr/X11R6/lib - Handling WM_COMMAND properly. Compiling in support for the Athena widget set: - Athena headers location: X11/Xaw3d - Athena library to link: Xaw3d Using Lucid menubars. Using Lucid scrollbars. Using Athena dialog boxes. Using Athena native widgets. TTY: Compiling in support for ncurses. Images: Compiling in support for GIF images (builtin). Compiling in support for XPM images. Compiling in support for PNG images. Compiling in support for JPEG images. Compiling in support for TIFF images. Sound: Databases: Internationalization: Mail: Compiling in support for "dot-locking" mail spool file locking method. Other Features: Inhibiting IPv6 canonicalization at startup. Compiling in support for dynamic shared object modules. Using the new portable dumper. Compiling in support for extra debugging code.