Hier nochmal der komplette Callstack:
Unhandled Exception: System.IO.IOException: File could not be opened/converted. Make sure the XPS printer driver is installed. —> System.IO.FileFormatException: Archive file cannot be size 0.
at MS.Internal.IO.Zip.ZipArchive.OpenOnFile(String path, FileMode mode, FileAccess access, FileShare share, Boolean streaming)
at System.IO.Packaging.ZipPackage…ctor(String path, FileMode mode, FileAccess access, FileShare share, Boolean streaming)
at System.IO.Packaging.Package.Open(String path, FileMode packageMode, FileAccess packageAccess, FileShare packageShare, Boolean streaming)
at System.Windows.Xps.Packaging.XpsManager…ctor(String path, FileAccess packageAccess, CompressionOption compressionOption)
at System.Windows.Xps.Packaging.XpsDocument…ctor(String path, FileAccess packageAccess, CompressionOption compressionOption)
at combit.ListLabel17.Wpf.ListLabelViewerControl.InitDocument(String fileName)
— End of inner exception stack trace —
at combit.ListLabel17.Wpf.ListLabelViewerControl.InitDocument(String fileName)
at combit.ListLabel17.Wpf.ListLabelViewerControl.OnFileNameChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)