Recent Emacs Snapshot Breaks Vimpulse

[Darrin Thompson]

Anyone know how I can tweak vimpulse.el to avoid this stack trace?

Debugger entered--Lisp error: (wrong-type-argument symbolp
(my-get-emulation-keymap))
 (setq (my-get-emulation-keymap) (cons (cons ...
viper-visual-mode-map) (my-get-emulation-keymap)))
 (push (cons (quote viper-visual-mode) viper-visual-mode-map)
(my-get-emulation-keymap))
 (let (ad-return-value) (setq ad-return-value
(ad-Orig-viper-normalize-minor-mode-map-alist)) (push (cons ...
viper-visual-mode-map) (my-get-emulation-keymap)) ad-return-value)
 viper-normalize-minor-mode-map-alist()
 viper-change-state(vi-state)
 viper-change-state-to-vi()
 viper-mode()

...

I'm using the emacs snapshot debs for ubuntu from peadrop.com. The
snapshot is dated 20070630.

Thanks.

--
Darrin