Protocol Buffers Error 4.0 TargetFrameworkVersion=v2.0; $(MSBuildProjectDirectory)\.. $(ProjectDirectory)\src $(ProjectDirectory)\lib $(ProjectDirectory)\protos $(ProjectDirectory)\benchmarks $(ProjectDirectory)\build_temp\$(BuildConfiguration) $(ProjectDirectory)\build_output\$(BuildConfiguration) $(BuildConfiguration) $(SourceDirectory)\ProtocolBuffers.sln $(SourceDirectory)\ProtocolBuffers2008.sln $(LibDirectory)\protoc.exe $(SourceDirectory)\ProtoGen\bin\$(BuildConfiguration)\protogen.exe $(BuildTempDirectory)\ProtoBench.exe $(LibDirectory)\NUnit 2.2.8.0\nunit-console.exe $(LibDirectory)\7-Zip 9.20\7za.exe $(SourceDirectory)\ProtocolBuffers\DescriptorProtos $(SourceDirectory)\ProtocolBuffers\DescriptorProtos $(SourceDirectory)\AddressBook $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffers.Test\TestProtos $(SourceDirectory)\ProtocolBuffersLite.Test\TestProtos $(SourceDirectory)\ProtocolBuffersLite.Test\TestProtos $(SourceDirectory)\ProtocolBuffersLite.Test\TestProtos $(SourceDirectory)\ProtocolBuffersLite.Test\TestProtos $(SourceDirectory)\ProtocolBuffersLite.Test\TestProtos $(SourceDirectory)\ProtocolBuffersLite.Test\TestProtos \protos \Protoc