Commented Unassigned: ZoomBox does not exists in namespace [20656]

I'm trying to use the ZoomBox in my application, but I get the following error:
```The name "ZoomBox" does not exist in the namespace "clr-namespace:Xceed.Wpf.Toolkit;assembly=Xceed.Wpf.Toolkit".```

I use the following namespace import in XAML:
```xmlns:xctk="clr-namespace:Xceed.Wpf.Toolkit;assembly=Xceed.Wpf.Toolkit"```

The error happens on this line of XAML:
```<xctk:ZoomBox>```

I use the latest version of the Extended WPF Toolkit Community Edition from [Nuget](http://www.nuget.org/packages/Extended.Wpf.Toolkit/). I already tried to uninstall and reinstall the package, clean and rebuild the solution, etc.

Has the control been removed from the Toolkit / Community Edition?
Comments: ** Comment from web user: Tekarihoken **

You can try using the following namespace import :
```
xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
```