Hello,

in the protobuf.cpp module the cpp.includePaths should be appended with the content of the grpcIncludePath variable if grpc will be used. But currently

    cpp.includePaths: {
        var result = [outputDir, includePath];
        if (useGrpc)
            result.push("grpcIncludePath");
        return result;
    }

it does not use the variable but appends the string "grpcIncludePath".