the following statement is quoted from ubi official forum,patch for US version is still in development
http://forums.ubi.com/groupee/forums...4/m/2221010444
I wanted to give you guys a little update on the patch that's in development. Yes, there is one being worked on. I don't have the release date for it available yet, but it will come as quickly as possible to resolve issues users have encountered.
This patch will be for the US version of the game only. A UK/EU patch will be available separately and will not work properly with US versions of the game due to differences in the copy protection software.
I'll let you all know as soon as I can when it will be coming out.