Dave Thomas <Dave / PragmaticProgrammer.com> writes:

> > (37) (warning/warning) Error caught in `font-lock-pre-idle-hook':
> > (invalid-function 1)
> 
> I'm getting this too, and haven't tracked it down yet. If anyone cures
> it, please, please post a fix.

The patch in this message fixes the problem:

http://list-archive.xemacs.org/xemacs-patches/200105/msg00051.html