Server Error in '/' Application.

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Line 54:         }
Line 55:      
Line 56:         StreamReader sr = File.OpenText(Server.MapPath(path));
Line 57: 
Line 58:         cml_content.Text = sr.ReadToEnd();

[FileNotFoundException: Could not find file 'E:\web\ts2seminars\htdocs\content\.cml'.]
   System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +328
   System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) +1038
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options) +115
   System.IO.StreamReader..ctor(String path, Encoding encoding, Boolean detectEncodingFromByteOrderMarks, Int32 bufferSize) +88
   System.IO.StreamReader..ctor(String path) +112
   System.IO.File.OpenText(String path) +32
   main.Page_Load(Object sender, EventArgs e) in e:\web\ts2seminars\htdocs\main.aspx.cs:56
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +47
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436