I just wanted some Information and maybe someone smart enough to get me the solution.When I run the patch it show an error message "this patch is designed for version 1.00. 1.01 was found instead". What does this thing really means I am talking about the version? What is this version of? and how can i overcome this problem. Any answers?
As Ben pointed out, you are trying to patch v1.00 but you already have updated to v1.01. Try updating to future versions. I think the latest version for AC2 is v1.06. uPlay should automatically try and update your game, or you can manually get the update from ubisoft or google for it.