System.OutOfMemoryException when Unpack

[johnwhile]

I am trying to uncompress the bundle files because I can't read the compressed files.
This code:

    AssetsManager helper = new AssetsManager();
    helper.LoadClassPackage("classdata.tpk");
    var inst = helper.LoadBundleFile(inputFilename, false);
    var file = inst.file;
    if (file.bundleHeader6.GetCompressionType() == 0) return;
    using (FileStream stream = File.Open(outputFilename, FileMode.Create, FileAccess.ReadWrite))
    {
        file.reader.Position = 0;
        file.Unpack(file.reader, new AssetsFileWriter(stream));
        stream.Position = 0;
    }

With reference from NuGet crash with message for a bundle file of 900MB but not with a bundle of 6MB
System.OutOfMemoryException in AssetsTools.NET.AssetBundleFile.Unpack(AssetsFileReader reader, AssetsFileWriter writer)
same error from version 2.0.7 to 2.0.9

but work correctly if i donwload the source code and add to my tool the AssetsTools.NET.csproj project

[Sighyu]

compile as 64 bit