Import variations not working

I have tryed to load example file for variations to import, but even that one do not works.

I have previously created the attributes for my product, but the load proccess always gets stuck showing:

row: 1 / 9

Starting….

Has anyone managed to make it work?

Rhanks in advance,

Enrique.

http://ww.wp.xz.cn/extend/plugins/woocommerce-csvimport/