Bug: CLOCKSUM does not work in column view when generating a second time [7.8.02]

[Don Roberts <roberts@refactory.com>]

Remember to cover the basics, that is, what you expected to happen and
what in fact did happen.  You don't know how to make a good report?  See

     http://orgmode.org/manual/Feedback.html#Feedback

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------------------------------------------------------------------------

Given the following org-mode file:
------------------------------------------------------------------------
#+PROPERTY: Effort_ALL  0:10 0:20 0:30 1:00 2:00 4:00 6:00 8:00
#+COLUMNS: %38ITEM(Details) %TAGS(Context) %7TODO(To Do) %5Effort(Time){:} %6CLOCKSUM{Total}

* Tasks
** TODO Task A
   :LOGBOOK:
   CLOCK: [2012-02-03 Fri 17:02]--[2012-02-03 Fri 18:02] =>  0:00
   :END:
   :PROPERTIES:
   :Effort:   0:30
   :END:
** TODO Task B
   :PROPERTIES:
   :Effort:   1:00
   :END:
------------------------------------------------------------------------
If you put the cursor on the * Tasks line and generate a Column View (C-c C-x C-c), then quit (q), then generate the Column View again, it fails with the message: "ad-Orig-error: The CLOCKSUM property can not yet be set with `org-entry-put"


Emacs  : GNU Emacs 23.3.50.1 (i386-apple-darwin9.8.0, NS apple-appkit-949.54)
 of 2011-10-25 on braeburn.aquamacs.org - Aquamacs Distribution 2.4
Package: Org-mode version 7.8.02

current state:
==============
(setq
 org-agenda-skip-scheduled-if-deadline-is-shown t
 org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
 org-speed-command-hook '(org-speed-command-default-hook org-babel-speed-command-hook)
 org-agenda-custom-commands '(("G" "Geektool agenda" ((agenda "") (alltodo))
                               ((org-agenda-ndays 1) (org-deadline-warning-days 7))
                               ("~/agenda.txt"))
                              )
 org-agenda-files '("~/Dropbox/GaugeProject.org" "~/DropBox/TODO.org")
 org-blocker-hook '(org-block-todo-from-children-or-siblings-or-parent)
 org-agenda-window-setup 'other-frame
 org-hide-leading-stars t
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-deadline-warning-days 3
 org-export-latex-format-toc-function 'org-export-latex-format-toc-default
 org-stuck-projects '("+PROJECT+LEVEL=2/-DONE" ("TODO" "NEXT" "NEXTACTION") nil
                      "Information")
 org-support-shift-select t
 org-tab-first-hook '(org-hide-block-toggle-maybe org-src-native-tab-command-maybe)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
                     org-src-mode-configure-edit-buffer)
 org-confirm-shell-link-function 'yes-or-no-p
 org-export-first-hook '(org-beamer-initialize-open-trackers)
 org-clock-persist t
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-directory "~/Dropbox"
 org-blank-before-new-entry nil
 org-babel-pre-tangle-hook '(save-buffer)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines org-optimize-window-after-visibility-change)
 org-publish-project-alist '(("orgfiles" :base-directory
                              "~/Documents/Evansville/Website/" :base-extension "org"
                              :publishing-directory
                              "/ssh:droberts@csserver.evansville.edu:~/www_home/"
                              :section-numbers nil :table-of-contents nil
                              :html-postamble nil)
                             ("files" :base-directory "~/Documents/Evansville/Website/"
                              :publishing-directory
                              "/ssh:droberts@csserver.evansville.edu:~/www_home/"
                              :base-extension "zip\\|pdf" :publishing-function
                              org-publish-attachment)
                             ("website" :components ("orgfiles" "files"))
                             ("dre" :base-directory "~/Documents/DonRobertsEnterprises"
                              :base-extension "org" :publishing-directory
                              "/ssh:donroberts@donrobertsenterprises.com:/Library/WebServer/" :section-numbers nil :table-of-contents nil :html-postamble nil)
                             )
 org-export-preprocess-before-normalizing-links-hook '(org-remove-file-link-modifiers)
 org-agenda-span 'day
 org-agenda-dim-blocked-tasks 'invisible
 org-mode-hook '((lambda nil
                  (org-add-hook (quote change-major-mode-hook)
                   (quote org-show-block-all) (quote append) (quote local))
                  )
                 org-babel-hide-all-hashes)
 org-refile-targets '(("TODO.org" :level . 1))
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point org-babel-execute-safely-maybe)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-log-into-drawer t
 org-export-interblocks '((lob org-babel-exp-lob-one-liners)
                          (src org-babel-exp-inline-src-blocks))
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-enforce-todo-dependencies t
 org-occur-hook '(org-first-headline-recenter)
 org-export-preprocess-before-selecting-backend-code-hook '(org-beamer-select-beamer-code)
 org-modules '(org-bbdb org-bibtex org-docview org-gnus org-info org-jsinfo org-habit
               org-irc org-mew org-mhe org-rmail org-vm org-wl org-w3m org-mac-iCal)
 org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc
                               org-beamer-auto-fragile-frames
                               org-beamer-place-default-actions-for-lists)
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-export-blocks '((src org-babel-exp-src-block nil)
                     (comment org-export-blocks-format-comment t)
                     (ditaa org-export-blocks-format-ditaa nil)
                     (dot org-export-blocks-format-dot nil))
 )