package-ui-add-site in 21.2+

Running an XEmacs 21.2 built from CVS, with packages built from CVS, I'm getting the following error when I attempt to add xemacs.org using Options/Manage Packages/Add Download Site Symbol's function definition is void: package-ui-add-site This yielded the following backtrace: Signaling: (void-function package-ui-add-site) (package-ui-add-site (quote ("ftp.xemacs.org" "pub/xemacs/packages"))) ) eval((package-ui-add-site (quote ("ftp.xemacs.org" "pub/xemacs/packages")))) Today is the first time I have built the xemacs-packages from scratch, so it's certainly possible I screwed something up, but I notice that 21.0 (using the same xemacs-packages) does not have this problem. vin