woocommerce latest update & attributes/variations

hello,

since the most recent woocommerce update whenever i try to add attributes or add/edit variations it gets locked up in a loading blocked screen (see image http://imgur.com/qmVHQhJ)

do you know why this is happening now? will there be a fix soon?

thank you.

https://ww.wp.xz.cn/plugins/woocommerce/