Sublime Text 3 uses Python 3 instead of Python 2, so your plugins may not work.
the issue is that Sublime Text 3 uses Python 3.3, whereas Sublime Text 2 uses Python 2.6. This is a problem for pywinauto as it only supports python versions less than 3. Everyone else has been suggesting to use swapy as an alternative
I installed Swapy: https://code.google.com/p/swapy/downloads/detail?name=swapy-ob-0.4.3.exe&can=2&q=
But how to force Sublime to use Swapy ?