Previously, I had to download the crossplatform\Aspose.Slides.dll from your site, and then include that in our app. I see now that in Nuget there is
Dotnet add package Aspose.Slides.NET6.CrossPlatform --version 25.11.0.…...now that in Nuget there is dotnet add package Aspose.Slides.NET6...package if you haven’t already: dotnet add package Aspose.Slides.NET6...