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Unable to load the metadata for assembly 'WPFToolkit.Extended'.

Feb 11, 2011 at 3:00 PM
Edited Feb 11, 2011 at 3:01 PM

I try use BusyIndicator in WPF .NET 4.0 app and I get this strange error:

Error    1    Unable to load the metadata for assembly 'WPFToolkit.Extended'. 
This assembly may have been downloaded from the web.
The following error was encountered during load: Could not load file or assembly 'WPFToolkit.Extended,
Version=1.0.803.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
Operation is not supported. (Exception from HRESULT: 0x80131515)

Also I try use last three realese and get the same error.

Feb 11, 2011 at 3:03 PM

This is a common problem when downloading files from thw web.  Simply go to the folder where you downloaded the DLL.  Right-click the DLL and select properties.  Near the bottom of the properties dialog there should be a button that says "Unblock".  Click that and you should be good to go.

Feb 11, 2011 at 3:10 PM

Thank for quick feedback, problem is solved