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diff --git a/src/ProtoBench/ProtoBench.csproj b/src/ProtoBench/ProtoBench.csproj
index b79b145fba..927a255702 100644
--- a/src/ProtoBench/ProtoBench.csproj
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diff --git a/src/ProtoDump/ProtoDump.csproj b/src/ProtoDump/ProtoDump.csproj
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diff --git a/src/ProtoGen.Test/ProtoGen.Test.csproj b/src/ProtoGen.Test/ProtoGen.Test.csproj
index 869e731829..a3b372a221 100644
--- a/src/ProtoGen.Test/ProtoGen.Test.csproj
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diff --git a/src/ProtoGen/ProtoGen.csproj b/src/ProtoGen/ProtoGen.csproj
index 6ddefa8ef9..e771d05581 100644
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diff --git a/src/ProtoMunge/ProtoMunge.csproj b/src/ProtoMunge/ProtoMunge.csproj
index 082a74672b..a04276cc99 100644
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diff --git a/src/ProtocolBuffers.Test/ProtocolBuffers.Test.csproj b/src/ProtocolBuffers.Test/ProtocolBuffers.Test.csproj
index 2f2f3ef69c..9caa9e9086 100644
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@@ -146,7 +125,8 @@
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+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" Condition=" '$(Configuration)' == 'Release' " />
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        Other similar extension points exist, see Microsoft.Common.targets.
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diff --git a/src/ProtocolBuffers.sln b/src/ProtocolBuffers.sln
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diff --git a/src/ProtocolBuffers/ProtocolBuffers.csproj b/src/ProtocolBuffers/ProtocolBuffers.csproj
index c8a0445e37..cff758e431 100644
--- a/src/ProtocolBuffers/ProtocolBuffers.csproj
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-  <Import Project="$(MSBuildExtensionsPath)\Microsoft\Silverlight\v2.0\Microsoft.Silverlight.CSharp.targets" Condition=" '$(Configuration)' == 'Silverlight2' " />
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" Condition=" '$(Configuration)' == 'Debug' " />  
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" Condition=" '$(Configuration)' == 'Release' " />
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\Silverlight\v2.0\Microsoft.Silverlight.CSharp.targets" Condition=" '$(Configuration)' == 'Debug_Silverlight2' " />
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\Silverlight\v2.0\Microsoft.Silverlight.CSharp.targets" Condition=" '$(Configuration)' == 'Release_Silverlight2' " />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">