Arduino Yun Error

Hey guys I'm trying to do this project on my Arduino Yun Smart Remote Control - Make:

I get all the way to Step 5 but then I get this error:
Traceback (most recent call last): File "mnt/sda1/arduino/www/SmartRemoteControl/servery.py", line 4, in from flask import *
ImportError: No module named flask

I've tried re running the steps with no luck. Please help!

Step #2: Install Software Dependencies

pip install --target /mnt/sda1/python-packages flask

I've done that step multiple times. I've even wiped the SD card and tried it again.

Restoring Arduino Yun to Factory Defaults ( backup your own data)

http://forum.arduino.cc/index.php?topic=227127.msg1642143#msg1642143

How to expand the Yún disk space

Instead of run

mkdir /mnt/sda1/python-packages
pip install --target /mnt/sda1/python-packages flask
echo "export PYTHONPATH=/mnt/sda1/python-packages" >> /etc/profile

Run this only

pip install  flask

Plan B Bypass arduino completely:

http://h-wrt.com/en/doc/ik

sonnyyu:
Run this only

pip install  flask

This worked, thank you!