Dear all, 

I tried to open an ipython notebook 

(yt-x86_64)[yd742@ria run5]$ yt notebook

But got the following error. Any ideas? 

/home/yd742/software/withpysci/yt-x86_64/lib/python2.7/site-packages/IPython/frontend.py:30: UserWarning: The top-level `frontend` package has been deprecated. All its subpackages have been moved to the top `IPython` level.

  warn("The top-level `frontend` package has been deprecated. "

Traceback (most recent call last):

  File "/home/yd742/software/withpysci/yt-x86_64/bin/yt", line 9, in <module>

    load_entry_point('yt==2.6.3', 'console_scripts', 'yt')()

  File "/home/yd742/software/withpysci/yt-x86_64/src/yt-hg/yt/utilities/command_line.py", line 1702, in run_main

    args.func(args)

  File "/home/yd742/software/withpysci/yt-x86_64/src/yt-hg/yt/utilities/command_line.py", line 84, in run

    self(args)

  File "/home/yd742/software/withpysci/yt-x86_64/src/yt-hg/yt/utilities/command_line.py", line 1458, in __call__

    from IPython.frontend.html.notebook.notebookapp import NotebookApp

  File "/home/yd742/software/withpysci/yt-x86_64/lib/python2.7/site-packages/IPython/html/notebookapp.py", line 38, in <module>

    from jinja2 import Environment, FileSystemLoader

ImportError: No module named jinja2

===================================

I'm using yt

Version = 2.6.1

Changeset = c994959ed3be

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I would very much appreciate it if anyone could help me on this. 

Regards,

Dai