Update Woocommerce in Plugin page

Today I had 4 plugins for update. When I clicked the first one – Woocommerce, everything turned white (all page/window of broser) and I can do nothing. Neither the log in page of WordPress appears. I can not to connect to my site http://www.organicscience.mx. Same thing – all in white.

Thank you very much for help.

http://wordpress.org/extend/plugins/woocommerce/