Compilation ErrorServer Error in '/FFEMAP' Application. Compilation Error Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. Compiler Error Message: CS0012: The type 'System.Collections.Specialized.INotifyCollectionChanged' is defined in an assembly that is not referenced. You must add a reference to assembly 'WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Source Error: Line 81: if (null != MarkerOverlay && (null != TkMarkerOverlay)) Line 82: { Line 83: TkMarkerOverlay.Features.Add(_sTkMarkerID, new Feature(LocTicket.X, LocTicket.Y, _sTkMarkerID)); Line 84: Line 85: // Settting marker style Source File: c:\inetpub\wwwroot\FFEMap\mapform.aspx.cs Line: 83 Show Detailed Compiler Output: c:\windows\system32\inetsrv> "C:\Windows\Microsoft.NET\Framework64\v3.5\csc.exe" /t:library /utf8output /R:"C:\Windows\assembly\GAC_MSIL\System.Web.Extensions\3.5.0.0__31bf3856ad364e35\System.Web.Extensions.dll" /R:"C:\Windows\assembly\GAC_64\System.Web\2.0.0.0__b03f5f7f11d50a3a\System.Web.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Configuration\2.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.IdentityModel\3.0.0.0__b77a5c561934e089\System.IdentityModel.dll" /R:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\assembly\dl3\fd6a86fe\0ef066bb_8870cb01\WebEdition.DLL" /R:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\assembly\dl3\72b7179c\522d62bb_8870cb01\NetTopologySuite.DLL" /R:"C:\Windows\assembly\GAC_MSIL\System.Drawing\2.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Web.Services\2.0.0.0__b03f5f7f11d50a3a\System.Web.Services.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Xml.Linq\3.5.0.0__b77a5c561934e089\System.Xml.Linq.dll" /R:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\mscorlib.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Web.Mobile\2.0.0.0__b03f5f7f11d50a3a\System.Web.Mobile.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Data.DataSetExtensions\3.5.0.0__b77a5c561934e089\System.Data.DataSetExtensions.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Design\2.0.0.0__b03f5f7f11d50a3a\System.Design.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Xml\2.0.0.0__b77a5c561934e089\System.Xml.dll" /R:"C:\Windows\assembly\GAC_MSIL\System\2.0.0.0__b77a5c561934e089\System.dll" /R:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\assembly\dl3\e3ce7622\8c3b43bb_8870cb01\GeoAPI.DLL" /R:"C:\Windows\assembly\GAC_MSIL\System.Runtime.Serialization\3.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.ServiceModel.Web\3.5.0.0__31bf3856ad364e35\System.ServiceModel.Web.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.Core\3.5.0.0__b77a5c561934e089\System.Core.dll" /R:"C:\Windows\assembly\GAC_MSIL\System.WorkflowServices\3.5.0.0__31bf3856ad364e35\System.WorkflowServices.dll" /R:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\assembly\dl3\58a1157e\c08351bb_8870cb01\MapSuiteCore.DLL" /R:"C:\Windows\assembly\GAC_MSIL\System.ServiceModel\3.0.0.0__b77a5c561934e089\System.ServiceModel.dll" /R:"C:\Windows\assembly\GAC_64\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50a3a\System.EnterpriseServices.dll" /R:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\assembly\dl3\677165ed\005ccc5a_2c0bcb01\DesktopEdition.DLL" /R:"C:\Windows\assembly\GAC_64\System.Data\2.0.0.0__b77a5c561934e089\System.Data.dll" /out:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\App_Web_v3uvga6a.dll" /debug- /optimize+ /win32res:"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\v3uvga6a.res" /w:4 /nowarn:1659;1699;1701 /warnaserror- "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\App_Web_v3uvga6a.0.cs" "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\App_Web_v3uvga6a.1.cs" "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\App_Web_v3uvga6a.2.cs" Microsoft (R) Visual C# 2008 Compiler version 3.5.30729.4926 for Microsoft (R) .NET Framework version 3.5 Copyright (C) Microsoft Corporation. All rights reserved. c:\inetpub\wwwroot\FFEMap\mapform.aspx.cs(83,9): error CS0012: The type 'System.Collections.Specialized.INotifyCollectionChanged' is defined in an assembly that is not referenced. You must add a reference to assembly 'WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. c:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\ffemap\90a8a31f\cddd4ae8\assembly\dl3\58a1157e\c08351bb_8870cb01\MapSuiteCore.DLL: (Location of symbol related to previous error) Version Information: Microsoft .NET Framework Version:2.0.50727.4952; ASP.NET Version:2.0.50727.4955