Server Error in '/' Application.

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Line 241:            if (defaultimgpath.Substring(0, 7).ToLower().CompareTo("http://") != 0)
Line 242:                defaultimgpath = "http://" + defaultimgpath;
Line 243:            str = new MemoryStream(Client.DownloadData(defaultimgpath));
Line 244:
Line 245:           //process.ResizeImage(bmp, XMax, YMax);

[IOException: Received an unexpected EOF or 0 bytes from the transport stream.]
   System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count) +5400338
   System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest) +102
   System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) +181
   System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) +49
   System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest) +137
   System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest) +143
   System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult) +99
   System.Net.TlsStream.CallProcessAuthentication(Object state) +47
   System.Threading.ExecutionContext.runTryCode(Object userData) +80
   System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) +0
   System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) +102
   System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) +68
   System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result) +746
   System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size) +58
   System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size) +26
   System.Net.ConnectStream.WriteHeaders(Boolean async) +124

[WebException: The underlying connection was closed: An unexpected error occurred on a send.]
   System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) +287
   System.Net.WebClient.DownloadData(Uri address) +106
   System.Net.WebClient.DownloadData(String address) +29
   WaterMark.watermarkbyimage(String watermarkconfigpath, String imagepath, Int32 XMax, Int32 YMax, String ext, String& statMsg) in d:\Vhost\store.oblibene.cz\www\app_code\watermark.cs:243
   watermarkimage.ProcessRequest(HttpContext context) in d:\Vhost\store.oblibene.cz\www\watermarkimage.ashx:90
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75