This means that a more recent version of notebook package needs to be used to open this file. More confusingly, the notebook package has been moved into a new project called Jupyter. Since this is a new development its package was not available on my ancient Ubuntu.
I installed it from PyPI using:
$ sudo pip3 install jupyter
To open its notebook web interface:
I was able to open the problematic IPython Notebook file correctly using this.
This error is caused due to opening a notebook created with a newer IPython on a computer with an older IPython. On my computer, I was using IPython installed from Ubuntu repositories, which is ancient.
I first uninstalled it:
$ sudo apt remove ipython
I installed the latest IPython from the Python Package Index:
$ sudo pip install ipython
The installation was successful, but on running IPython it complained about many other programs. I installed the libraries it complained about:
Aftershock makes custom gaming notebooks in Singapore. I had the chance to use one of these notebooks, a XG15-V2 recently. This post has some of the specifications and my opinion about this notebook.
NVIDIA Geforce GTX 765M with 2GB VRAM
Ubuntu 14.04 installed and works for the most part without any problems.
The color gamut of the display is gorgeous. Its a joy to view colorful photos and webpages on it.
Glossy display. Reflects everything like a mirror. This is quite distracting.
Huge boxy chassis.
Horrible trackpad. I disable it using Fn + F1 the moment I login and use a mouse instead.
Even though this is an Optimus notebook, it cannot last long on battery.
Fans keep running all the time.
Motherboard is listed in BIOS and by CPU-Z as w35xstq_370st. It is manufactured by Clevo.
Actually this entire notebook is designed and sold around the world as Clevo W355ST. The motherboard is also referred to generically as W355ST. This can be seen in the sticker at the bottom of the notebook.
BIOS is by American MegaTrends and is shown on bootup as Aptio 2.15.1236. However, Windows and CPU-Z list it as 4.6.5 (11/13/2013).
Webcam: The integrated webcam is off by default under Ubuntu. To use it it first needs to be turned on by pressing Fn + F10. You can then check if it’s working by using Cheese.