The commands I used were:
elpy-shell-send-region-or-buffer
and
elpy-shell-switch-to-shell

Under previous Emacs version 24.4.90, the same package and command worked fine.
Thanks a lot.

Da Zhang

On 3/31/2015 10:40 PM, Eli Zaretskii wrote:

Date: Tue, 31 Mar 2015 17:24:44 -0400
From: Da Zhang <zhangda82@gmail.com>
CC: 20237@debbugs.gnu.org

My set up of python path in .emacs is:
(setq python-shell-interpreter "C:\\Python27\\Scripts\\ipython")
(setq python-shell-interpreter-args "-i --profile=dev --colors=Linux")

And how (with which command) did you start the interpreter?