CS0234: The namespace "SYSTEM.WEB.MVC" does not exist in the type or namespace name "Ajax" (is the assembly reference missing?)

From the SVN down the program, compiled a large pile of errors, found to be missing references, but clearly quoted, and then opened the reference, found System.Web.Mvc this quote with an exclamation mark,

Later re-referencing the system.web.mvc of the Machine, the compilation will not error, but run he continued to report "CS0234: namespace"System.Web.Mvc " does not exist in the type or namespace name"Ajax "( is the assembly reference missing ?) " Error,

Baidu, some people say is set SYSTEM.WEB.MVC This dll 's properties "Copy Local" set to true OK. , right-click the Open System.Web.Mvc property,

And then running, that's right. if it is in English, this property is Copy Local = True. However, one problem is that each time you re-down from the SVN server down the code, or revert this project to do this again, it feels very troublesome, do not know what good way to do not, thank you.

CS0234: The namespace "SYSTEM.WEB.MVC" does not exist in the type or namespace name "Ajax" (is the assembly reference missing?)