[Plugin: WooCommerce – excelling eCommerce] Problem with the price of order details in "thank y

I found the same problem , how can it be solved pls?
http://postimage.org/image/ax2e2jah9/

This error still exist in new version 1.6.6. I also post in github but can’t understand actually how to fix that.
https://github.com/woothemes/woocommerce/issues/1753

@fresh4pet: Your solution is not available in some language that Thousand separator is dot(.) not comma(,).
@mikejolley: Please considerer fix that error. I have try to fix myself but no success while this error affect many countries