Thank you for your reply.
I have solved it by reinstalling org-7.7.

Originally, I started emacs with parameter "-q" , and then used C-u 0 M-x byte-recompile-directory to compile the lisp folder under org-7.7. However, the compilation experienced problem. Then I started emacs without "-q" and compile. Perhaps this process is the cause of the problem.

Thank you very much.

On Sun, Oct 9, 2011 at 10:12 PM, Jambunathan K <kjambunathan@gmail.com> wrote:
Du Yanning <duyanning@gmail.com> writes:

> Windows 7
> GNU Emacs 23.3.1 for Windows (i386-mingw-nt6.1.7601)
> Org 7.7
>
> When I press C-c C-c to align a table, it says "invalid function:
> org-called-interactively-p"
>
> Org 7.5 is Ok.

Check

M-x locate-library RET org-table RET
M-x locate-library RET org-macs RET

Make sure the reported values are both elc files (or they are both el
files) and they are in the same dir

>

--