Is there a new agent bug?

[Harry Putnam <reader@newsguy.com>]

I quit using the agent for a while but now wanted to start fresh
again.

The steps I took were to close gnus down.  Get cvs updated, then
rename ~/News/agent to ~/News/agentX   and restart gnus, having
uncommented (gnus-agentize) in ~/.gnus.

First thing I noticed was that our gnu had shed his red coat and grew
a white one.... Has that been changed or is this the first indicator
of some local screw up?

Other things seemed to be working, and the needed directories: agent and
sub directories were created, except no agent/lib appeared.

I thought maybe that only happened if I did something with the agent
category interface (`J C' in group buffer)

So proceeded to call `J C' in group buffer.  There I see the expected
   default:0
So pressing `p' to edit the predicate, I see `nil', so I enter `true'
and remove `nil'.  Attempting to save that edit buffer gives this
back trace:

Debugger entered--Lisp error: (wrong-type-argument consp nil)
  setcar(nil true)
  (lambda (predicate) (setcar (cdr ...) predicate) (gnus-category-write) (gnus-category-list))(true)
  gnus-edit-form-done()
  call-interactively(gnus-edit-form-done)

Creating the News/agent/lib  directory by hand doesn't help.  I get
the same backtrace

Can anyone confirm that there is a problem there?  Or is it something local?