Using python 2.7, on Windows 32bit with SciPy 0.16 (32bit python 2.7) I get the following in ipython after installing the latest GPy and running the tests: File "C ...

This seems to result from a few files (in GPy/util/dataset.py and GPy/util/config.py) that are opened and not closed. I've fixed it by replacing the relevant "open" statements with "with open". Please ...