Conda update on Windows 7 failing with import error of yaml

Question

On Win7 64 bit, with Anaconda 1.7, when I go to the command prompt and try:

conda update conda

I get the following error.

Answer 1

The only way I found to fix this was to search for yaml and manually add it to the PYTHONPATH environment variable, e.g.

PYTHONPATH=C:\Anaconda\pkgs\pyyaml-3.10-py27_1\Lib\site-packages