Gtk-warning **: Locale Not Supported By C Library. While Using Several Python Modules (mayavi, Spectral)

I updated my MacBook to Mavericks, reinstalled Macports and all Python 2.7 modules I usually use. While running Python I get the following messages: when importing mlab: from mayav

Solution 1:

While using OS X Mavericks one has to use: ipython --pylab=wx instead of ipython --pylab=osx to avoid crashing the X11 window. I don't know why this works.