shipping with FedEx

please help me..

I am trying to use the FedEx Shipping Gateway in nop2.65. I have generated the FedEx Key,
and the other details required and have configured these all in the administration section.
But the thing is that when I am trying to complete the check out process then the service is saying
"authentication failed"

the error at admin section SYSTEM-->LOGO

Short message:   File does not exist.

Full message:   System.Web.HttpException (0x80004005): File does not exist. at System.Web.StaticFileHandler.ProcessRequestForNonMapPathBasedVirtualFile(HttpRequest request, HttpResponse response, String overrideVirtualPath) at System.Web.StaticFileHandler.ProcessRequestInternal(HttpContext context, String overrideVirtualPath) at System.Web.DefaultHttpHandler.BeginProcessRequest(HttpContext context, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

thanks..

Try Estimate Shipping.  Do you get same result?
The above err msg does not look to be shipping related.  Did you do any custom coding?

thanks for replay
i am tried that one also,getting same error
i did not do any changes in coding side.

What is your URL in the Fedex configuration?
It should be this for production
https://gateway.fedex.com:443/web-services