I've just released Eyegrade 0.4.3. This release fixes a bug that made the functionality that exports grades fail when the program is run with the Python 2.6 version I distribute for Windows. Linux users with a reasonably recent version of Python were not affected. This is the only change with respect to version 0.4.2.
If you have installed Eyegrade through git, you can easily update the program by executing the command git pull from inside the directory in which Eyegrade is installed.