Importing Confusion Pandas
I had the same error. I did not build pandas myself so i thought i should not get this error as mentioned on the pandas site. So i was confused on how to resolved this error.
The pandas site says that matplotlib is an optional depenedency so i didn't install it initially. But interestingly, after installing matplotlib the error disappeared. I am not sure what effect it had. 
it found something!
I had 0.71 pandas before today. I tried to update and I simply ran the .exe file supplied by the website.
now I tried " import pandas" but then it gives me an error
ImportError: C extensions not built: if you installed already verify that you are not importing from the source directory.
I am new to python and pandas in general. Anything will help. 
thanks,