Problems with pdfEditor.Concatenate demo

Hi,
I've yet installed Aspose.Pdf.Kit 2.1.0.0 and run the demo for concatenating pdf documents.
The Concatenate method (i.e. pdfEditor.Concatenate(inStream1, inStream2, outStream))
returns false and the output buffer has 0 length.
I've tried the VB one and the C# one on two different PC but got the same result, I've also unzipped the .zip but nothing changed.

Reinstalling previous versions (2.0.0.0 and 2.0.1.0) it works.
What is going wrong ?

Thank You

Claudio Mellina

Thanks for considering Aspose.

We have found some mistakes when processing the latest release. Our developers are now working on the recovery job now.

Sorry for this inconvenience.

Dear Claudio,

We have got this problem fixed now. Please download again from File Format APIs for .NET Core, Java, Python, C++, Android | products.aspose.com.

Very sorry for you inconvenience.