Hi,
Well the dll which I sent you is actually 4.2.0.0 version. And yes, this dll is from the release version. You may download it. After you install 4.2.0.0 using its insaller msi, you may pick it from Net2.0 folder where the Aspose.Cells Component is installed. Please make sure that you are using the latest version (4.2.0.0). Before installing, please uninstall all the previous entries of Aspose.Cells.
Thank you.