压缩和提取与SevenZipSharp

我正试图用SevenZipSharp压缩和提取文件，但我得到以下错误:

无法加载7-zip库或内部COM错误!消息:failed to load library.

我代码:

string extractFrom = @"C:'Test'Test.7z";
string extractTo = @"C:'Test2";
string compressFrom = @"C:'Test2";
string compressTo = @"C:'Test'Test2.7z";
SevenZipBase.SetLibraryPath(@"C:'Program Files'7-Zip'7z.dll");
SevenZipCompressor compressor = new SevenZipCompressor();
compressor.CompressionMode = CompressionMode.Create;
compressor.TempFolderPath = Path.GetTempPath();
compressor.ArchiveFormat = OutArchiveFormat.SevenZip;
compressor.CompressDirectory(compressFrom, compressTo);//Error
SevenZipExtractor extractor = new SevenZipExtractor(extractFrom);
extractor.ExtractArchive(extractTo);//Error

错误在:

compressor.CompressDirectory(compressFrom, compressTo);

在:

和

extractor.ExtractArchive(extractTo);

我该如何解决这个问题?