I believe the absence of sticky tags means we're on the head branch, right?
$ cvs status index.tcl
===================================================================
File: index.tcl Status: Up-to-date
Working revision: 1.3
Repository revision: 1.3 /cvsroot/openacs-4/www/index.tcl,v
Sticky Tag: (none)
Sticky Date: (none)
Sticky Options: (none)
So we should try openacs-4.6 plus dotlrn-stable, or current stable branches of both? We'd picked HEAD of both just for giggles and because some other [perhaps out-of-date] threads here had suggested that HEAD might be happier, especially with Calendar.