WIX 3.5在NAnt下失败,但在VS2010下不失败

我有一套使用voctive开发的简单wix3.5安装程序,我可以在VS2010中愉快地编译,但是当我尝试通过TeamCity上的NAnt(和MSBuild)编译它们时(即TeamCity->南特->MSBuild->WIX)我得到以下错误:

 [exec] Project file contains ToolsVersion="4.0", which is not supported by this 
            version of MSBuild. Treating the project as if it had ToolsVersion="3.5".
 [exec] Compile:
 [exec]   Microsoft (R) Windows Installer Xml Compiler version 3.5.2006.0
 [exec]   Copyright (C) Microsoft Corporation. All rights reserved.
 [exec]
 [exec]   Product.wxs
 [exec]   Product.Generated.wxs
 [exec] Link:
 [exec]   Microsoft (R) Windows Installer Xml Linker version 3.5.2006.0
 [exec]   Copyright (C) Microsoft Corporation. All rights reserved.
 [exec]
 [exec] light.exe : error LGHT0001: Unable to load DLL 'winterop.dll': The specified module 
           could not be found. (Exception from HRESULT: 0x8007007E)
 [exec]
 [exec]   Exception Type: System.DllNotFoundException
 [exec]
 [exec]   Stack Trace:
 [exec]      at Microsoft.Tools.WindowsInstallerXml.Cab.Interop.NativeMethods.ExtractCabBegin()
 [exec]      at Microsoft.Tools.WindowsInstallerXml.Binder.BindDatabase(Output output, String databaseFile)
 [exec]      at Microsoft.Tools.WindowsInstallerXml.Binder.Bind(Output output, String file)
 [exec]      at Microsoft.Tools.WindowsInstallerXml.Tools.Light.Run(String[] args)
 [exec] Done Building Project "c:\dev2\ad3\utilities\Installers\Database\Database.wixproj" (default targets) -- FAILED.
 [exec] Done Building Project "c:\dev2\ad3\AgentDesktop3.1.sln" (default targets) -- FAILED.
 [exec]
 [exec] Build FAILED.
 [exec]
 [exec] "c:\dev2\ad3\AgentDesktop3.1.sln" (default target) (1) ->
 [exec] "c:\dev2\ad3\utilities\InstallerService\InstallerService.csproj" (default target) (5) ->
 [exec] (ResolveAssemblyReferences target) ->
 [exec]   C:\Windows\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets
            : warning MSB3088: Could not read state file
            "obj\Release\ResolveAssemblyReference.cache". Unable to find assembly
            'Microsoft.Build.Tasks.v4.0, Version=4.0.0.0, Culture=neutral,
            PublicKeyToken=b03f5f7f11d50a3a'.
 [exec]
 [exec]
 [exec] "c:\dev2\ad3\AgentDesktop3.1.sln" (default target) (1) ->
 [exec] "c:\dev2\ad3\utilities\Installers\Database\Database.wixproj" (default target) (6) ->
 [exec] (Link target) ->
 [exec]   light.exe : error LGHT0001: Unable to load DLL 'winterop.dll': The specified 
              module could not be found. (Exception from HRESULT: 0x8007007E)
 [exec]
 [exec]     1 Warning(s)
 [exec]     1 Error(s)
 [exec]
 [exec] Time Elapsed 00:00:05.92

 BUILD FAILED

有什么想法吗?