Comment 5 for bug 461964

I don't mind whch release it goes in, and I don't have SVN access so I can't do it myself anyway.

That problem is because the lines of longitude are made up of an ellipse, and it counts one ellipse as two lines of longitude (e.g. the prime meridian becomes the international date line at the poles). So you can only have an even number of longitude lines. The way the ellipses are constructed, it is extremely non-trival to break the ellipse at the poles.

Maybe I should add an error message to that effect when an odd number is entered?