Cannot get To Clan Page #2

Im In My Clan And I Cannot Get To the Second page Of The Clan Website
ERROR NOTICE:__

Server Error in '/' Application.
Method not found: 'System.Data.DataRow NewClan.Core.Player_CF.get_player_info_mirror(System.String)'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.MissingMethodException: Method not found: 'System.Data.DataRow NewClan.Core.Player_CF.get_player_info_mirror(System.String)'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[MissingMethodException: Method not found: 'System.Data.DataRow NewClan.Core.Player_CF.get_player_info_mirror(System.String)'.]
NewClan.clanstat_cf.show_self(String usn) +0
NewClan.clanstat_cf.bind_memberdata() +1500
NewClan.clanstat_cf.when_changepage(Object sender, GridViewPageEventArgs e) +75
System.Web.UI.WebControls.GridView.OnPageIndexChanging(GridViewPageEventArgs e) +133
System.Web.UI.WebControls.GridView.HandlePage(Int32 newPage) +86
System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +464
System.Web.UI.WebControls.GridView.RaisePostBackEvent(String eventArgument) +207
System.Web.UI.WebControls.GridView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565


Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053