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Silverlight 4 Controls Installation

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Brett Parkhurst
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Brett Parkhurst asked on 18 Dec 2009, 04:13 PM
I am having an issue trying to get the Telerik Silverlight 4 controls into Visual Studio 2010.  When I right click on the toolbox and browser out to bring in the Telerik.Windows.Controls.dll I get the following error:

Could not load file or assembly ..\..\..\Telerik.Windows.Controls.dll or one of it's dependencies.  Operation is not supported.  (Exception from HRESULT: 0x80131515).

How can I load these in properly?

Thanks,

Brett Parkhurst
Chief Software Architect
Activant Solutions

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Boyan
Telerik team
answered on 19 Dec 2009, 01:29 PM
Hi Brett Parkhurst,

There is such a problem, that VS cannot resolve correctly the path to any of our assemblies– we have reported this issue to MS and we are working closely with them to resolve it as soon as possible. As a workaround you can manually copy all our assemblies to the VS public assemblies folder and everything will work as expected. In fact we have the same problem with our Silverlight 3 assemblies, if you try to add them manually to the VS2010 toolbox you will get the same error. However, our installation deals with it by some registry entries.

However there is also another problem that you need to know, if you add our SL4 assemblies to the toolbox and you have our SL3 assemblies installed you won't be able to drag any of our SL4 controls from the toolbox due to an exception. Therefore, to make our SL4 assemblies add to the toolbox and work properly you will have to perform the following steps:

1. Uninstall Telerik SL3 controls
2. Manually copy our SL4 assemblies to the VS Public Assemblies folder and add them manually to the toolbox

We apologize for this inconvenience, this is why we posted that we don't have VS2010 toolbox support in our SL4 related blogpost. But still this is only a beta for both VS2010 and SL4 and I can assure you that we are working closely with Microsoft to resolve those issues. If you think that these workarounds are too much trouble you can still try our controls without toolbox by just writing XAML.

Hope that this is helpful. If you have more questions please let me know.

Kind regards,
Boyan
the Telerik team

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Brian Baker
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answered on 20 Apr 2010, 08:42 PM
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