Sourcing .zshrc from .zprofile causes problems

[lists <lists@xxxxxxxxxxxxxxxx>]

Hi list,
	When I put

if [[ -f ~/.zshrc ]]; then . ~/.zshrc ; fi

in my .zprofile, I get

.zshrc:unalias:181: no such hash table element: run-help

when launching a new Terminal window (this is under Mac OS 10.3.5 using 
zsh 4.2.0).  Lines 181-183 of my .zshrc file are as follows:

unalias run-help
autoload run-help
HELPDIR=~/.zsh_help

run-help is properly unaliased though.  The error message goes away 
when in don't source .zshrc in my .zprofile.  However, at that point 
the following zstyle from my .zshrc file

zstyle ':completion:*' list-colors ${(s.:.)LS_COLORS}

doesn't work when I open a new Terminal window (I don't see colors when 
I tab).  If I do 'exec zsh' in the new window, the zstyle does work.

Any ideas?  I'll happily post more from the dotfiles if that would help.

Thanks