I have following function as part of my emacs configuration.org settings for publishing org to html.

(defvar website-html-preamble "<nav> <ul class="nav nav-tabs"> <li role="presentation" class="active"><a href="/">Home</a></li> <li role="presentation"><a href="#">Profile</a></li> <li role="presentation"><a href="#">Messages</a></li> </ul> </nav>") (defvar website-html-postamble "<div class='footer'> Copyright 2016 %a (%v HTML).<br>Last updated %C. <br> </div>") (setq org-publish-project-alist '( ("website" :components ("orgfiles")) ("orgfiles" :base-directory ,org-mode-websrc-directory :base-extension "org" :publishing-directory ,org-mode-publishing-directory :exclude "*/excluded/*" :recursive t :publishing-function org-twbs-publish-to-html :headline-levels 3 :section-numbers nil :with-toc nil :html-preamble ,website-html-preamble :Html-postamble ,website-html-postamble ) ) ) 

",var-name" (eg: ,website-html-preamble) causes following problems (using org-babel-load-file to load config)

Debugger entered--Lisp error: (invalid-read-syntax "#") eval-buffer(# nil "c:/rahuketu/programming/EMAC/Emacs_Config/.emacs.d/configuration.el" nil t) ; Reading at buffer position 4284
load-with-code-conversion("c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/configuration.el" "c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/configuration.el" nil nil)
load("c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/configuration.el" nil nil t)
load-file("c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/configuration.el") org-babel-load-file("c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/configuration.org") eval-buffer(# nil "c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/init.el" nil t) ; Reading at buffer position 422
load-with-code-conversion("c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/init.el" "c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/init.el" t t)
load("c:/rahuketu/programming/EMACS/Emacs_Config/.emacs.d/init" t t)

[0 "\205\262 \306=\203 command-line() normal-top-level()