{System.ArgumentNullException: Value cannot be null.
Parameter name: stream
at Syncfusion.Compression.Zip.ZipArchive.Open(Stream stream, Boolean closeStream)
at Syncfusion.Presentation.FileDataHolder.AddDefaultContent()
at Syncfusion.Presentation.Presentation.Create()
at SyncTest.Program.CreatePPT(String filename) in C:\Dev\PresentationTest\SyncTest\Program.cs:line 21
at SyncTest.Program.Main(String[] args) in C:\Dev\PresentationTest\SyncTest\Program.cs:line 16}