I\'m looking at some old code that I can only assume worked at one time.
MyPage.aspx:
function GetCompanyList(officeId) { var co
maybe you are using Routing in your pages. then must be set real path after call PageMethods:
PageMethods.set_path("<%=ResolveUrl("~/YourPage.aspx")%>"); PageMethods.YourMethod(param, OnSuccess, OnError);