Before first headline at position XX in buffer - Unable to update org-clock-table

Question

I'm using emacs on Windows 7.
I have this file called temp.org, where I log all my project information.
I have clock entries project wise and I also had the clock table report. After the update that happened today (7-Sep-2017), I'm unable to update the clock table report using C-c C-c.

This is the message that is being displayed when I press C-c C-x C-r

Before first headline at position 79 in buffer temp.org

I don't know what is wrong as I have not changed anything myself. In my .emacs file I had the following entry - but I commented it out to see if that was causing the problem.

;; Display the org clock sum in terms of hours and not in units of days 
;;(setq org-time-clocksum-format (quote (:hours "%d" :require-hours t :minutes ":%02d" :require-minutes t)))

As expected that did not solve the problem.
This is my .emacs file for reference.

This is how it looked before

#+BEGIN: clocktable :maxlevel 4 :scope subtree
#+CAPTION: Clock summary at [2017-09-06 Wed 19:52]
| Headline                                    | Time     |        |       |       |
|---------------------------------------------+----------+--------+-------+-------|
| *Total time*                                | *447:58* |        |       |       |
|---------------------------------------------+----------+--------+-------+-------|
| Projects                                    | 447:58   |        |       |       |
| \_  D301 Cycle time reduction               |          |  37:09 |       |       |
| \_    Overview - KOM                        |          |        |  1:37 |       |
| \_    PCSD Development                      |          |        | 10:17 |       |
| \_      C_Add_ALARMS_AT [0/1]               |          |        |       | 10:17 |
| \_    Control coding                        |          |        | 25:15 |       |
| \_  FMTO - MRU for Propylene Loading...     |          | 172:19 |       |       |
| \_    IFDS & DI/DO Mismatch alarms          |          |        | 35:17 |       |
| \_    Alarms, DO & AO [0/12]                |          |        | 56:09 |       |
| \_    Simulation & Code check out           |          |        | 80:53 |       |
| \_      Line up checks                      |          |        |       | 39:26 |
| \_      Sim code checkout sheet             |          |        |       | 20:06 |
| \_  IP21 graphics update                    |          |  30:00 |       |       |
| \_    KR-26/27 OFCC + OXF + Staged Temp...  |          |        | 30:00 |       |
| \_  MET-2 Loss of Cooling implementation... |          |  10:42 |       |       |
| \_    General information:                  |          |        | 10:42 |       |
| \_  B-6610 Quat 188 LOPA Gap Closure        |          |  24:43 |       |       |
| \_  Poly 3 Project                          |          |  25:51 |       |       |
| \_  PBG-MEI Expansion Code -...             |          |  16:14 |       |       |
| \_  DCG Exception report                    |          |  37:28 |       |       |
| \_  EDC V800A/B Project                     |          |  45:30 |       |       |
| \_  B4 project                              |          |  25:22 |       |       |
| \_  Waterbatch Work Project                 |          |  19:48 |       |       |
| \_  MOD Sample project - Tic-Tac-Toe        |          |   2:52 |       |       |
| \_    Charter - Overall idea                |          |        |  1:12 |       |
| \_    PCSD Development                      |          |        |  1:40 |       |
#+END:

When I pressed C-c C-c, the table was gone and I got message mentioned above.

Answer 1

You can only use the subtree scope if you're in a headline.

Out of a headline you could use :scope file or file-with-archives.