Telerik.Web.UI.RadWindow cannot find the embedded skin after upgrading to Sitefinity 4.4

Question

After upgrading my site to Sitefinity 4.4, I was asked to upgrade the license file, as is usually the case during the upgrade, but then I got a yellow .Net screen, which indicates

"Telerik.Web.UI.RadWindow with identifier =" confirmWindow "could not find the embedded skin with the name" Sitefinity ". Please make sure to give it the name correctly, or if you want to use the custom skin, set EnableEmbeddedSkins = false"

(screenshot below)

I understand that Telerik has moved the location of the RadControl skins to 4.4 from Telerik.Web.UI to Telerik.Web.UI.Skins, however I did not expect it to break its license confirmation page.

According to this blog post, skins have been moved to reduce memory usage if you don't need additional skins.

Does anyone know what I need to do to fix the link and / or force Sitefinity to use reduced skins by default? My number 1 priority is the problem. The second priority will be less memory usage.

Answer 1

All ASP.NET AJAX controls in Sitefinity use the so-called Sitefinity skin, which is now part of the external Telerik.Web.UI.Skins.dll. If you do not want to add a link to the Skins assembly, you should use the "Default" skin, which is located in Telerik.Web.UI.dll. To exclude the Sitefinity skin for the entire web application, simply add this line to the appSettings section of the web.config file:

<add key="Telerik.EnableEmbeddedSkins" value="false" /> 

Answer 2

To solve priority 1 - just make it work:

a. In Visual Studio, click Project> Add Link ... b. Click Browse and browse to the bin folder of Sitefinity c. Select "Telerik.Web.UI.Skins.dll" and click "OK." e. Create your project

Now you need to work fine.

However, this does not meet priority 2 - less memory usage. Since Sitefinity uses the Sitefinity user skin for the admin user interface, is it possible to profit from the memory mentioned in Ivan Zhekov’s blog post?