Attempted to access a field that is not accessible by the caller.

I am getting the below error while hosting my application. It works fine in localhost. Can anyone please suggest me whats the cause for it

Attempted to access a field that is not accessible by the caller.
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.FieldAccessException: Attempted to access a field that is not accessible by the caller.

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:

[FieldAccessException: Attempted to access a field that is not accessible by the caller.] System.Reflection.RtFieldInfo.PerformVisibilityChe ckOnField(IntPtr field, Object target, IntPtr declaringType, FieldAttributes attr, UInt32 invocationFlags) +0 System.Reflection.RtFieldInfo.InternalGetValue(Obj ect obj, Boolean doVisibilityCheck, Boolean doCheckConsistency) +178 System.Reflection.RtFieldInfo.GetValue(Object obj) +8 MagicAjax.AjaxCallHelper.GetPageHiddenDictionary(P age page, String fieldName) +48 MagicAjax.AjaxCallHelper.Page_PreRender(Object sender, EventArgs e) +306 System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +2012740 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1566

Thanks in Advance

Reshma

reshma24pc