I think this is the output_log: Building Solution: WheelSounds (Release) Building: WheelSounds (Release) Build started 5/21/2015 2:00:44 PM. __________________________________________________ Project "C:\Users\Jeff\Documents\Projects\plugin_tutorial\plugin_tutorial\WheelSounds.csproj" (Build target(s)): Target GetReferenceAssemblyPaths: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(983,5): warning MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.5" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend. Done building target "GetReferenceAssemblyPaths" in project "WheelSounds.csproj". Target ResolveAssemblyReferences: No way to resolve conflict between "System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" and "System.Xml, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e". Choosing "System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" arbitrarily. C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1605,5): warning MSB3270: There was a mismatch between the processor architecture of the project being built "MSIL" and the processor architecture of the reference "C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll", "x86". This mismatch may cause runtime failures. Please consider changing the targeted processor architecture of your project through the Configuration Manager so as to align the processor architectures between your project and references, or take a dependency on references with a processor architecture that matches the targeted processor architecture of your project. Done building target "ResolveAssemblyReferences" in project "WheelSounds.csproj". Target GenerateTargetFrameworkMonikerAttribute: Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files. Target CoreCompile: Skipping target "CoreCompile" because all output files are up-to-date with respect to the input files. Target CopyFilesToOutputDirectory: WheelSounds -> C:\Users\Jeff\Documents\Projects\plugin_tutorial\output\Plugins\plugin_tutorial.dll Done building project "WheelSounds.csproj". Build succeeded. C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(983,5): warning MSB3644: The reference assemblies for framework ".NETFramework,Version=v4.5" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend. C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1605,5): warning MSB3270: There was a mismatch between the processor architecture of the project being built "MSIL" and the processor architecture of the reference "C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll", "x86". This mismatch may cause runtime failures. Please consider changing the targeted processor architecture of your project through the Configuration Manager so as to align the processor architectures between your project and references, or take a dependency on references with a processor architecture that matches the targeted processor architecture of your project. 2 Warning(s) 0 Error(s) Time Elapsed 00:00:00.37 ---------------------- Done ---------------------- Build: 0 errors, 2 warnings