When running python26 under windows OS (64bits)..... I have got errors like:
import win32api\" error in Python 2.6: pywintypes26.dll
or
As suggested above the post install script is not run, this issue can be seen when installing from a wheel (As I encountered)
python scripts\pywin32_postinstall.py -install
If find you have this issue when installing via wheels, then installing it from here can solve the above issue.
https://pypi.python.org/pypi/pypiwin32