Message in Spanish (Español)
El archivo del proyecto contiene ToolsVersion="<var>X</var>", que esta versión de MSBuild no admite. Se tratará el proyecto como si contuviera ToolsVersion="4.0".
Unlocalized message
Project file contains ToolsVersion="<var>X</var>", which is not supported by this version of MSBuild. Treating the project as if it had ToolsVersion="4.0".
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