Could not load file or assembly 'Telerik.Framework, Version=3.7.2136.240, Culture=neutral, PublicKeyToken=dfeaee0e3978ac79' or one of its dependencies

[Helen]

We have a site hosted by an outside company; now we want to bring it back to in-house after contract expires. I got the code. I can compiled without any problem;  then got the error when launching the site,

Could not load file or assembly 'Telerik.Framework, Version=3.7.2136.240, Culture=neutral, PublicKeyToken=dfeaee0e3978ac79' or one of its dependencies. The system cannot find the file specified

In the web.config, the following lines caused the error.

Line 264:      <add verb="GET" path="*.sflb" type="Telerik.Cms.Engine.ContentHttpHandler, Telerik.Cms.Engine" />
Line 265:      <add verb="GET" path="*.sflb.ashx" type="Telerik.Cms.Engine.ContentHttpHandler, Telerik.Cms.Engine" />
Line 266:      <add verb="GET" path="*.tmb" type="Telerik.Cms.Engine.ContentHttpHandler, Telerik.Cms.Engine" />

The project has the following Telerik references,

Telerik.Cms.Data.dll
Telerik.Cms.dll
Telerik.Cms.Engine.Data.dll
Telerik.Cms.Engine.dll
Telerik.Cms.Web.UI.dll

The contract company said they received the code from old developers and made it working only using the available Telerik dll files. Can any expert tell me what causes the error and if the Telerik.framework.dll or any other Telerik dll is needed? I suspect the dll is in GAC if needed.

thanks

[Rumen]

Hi Helen,

You are using an old version of Sitefinity and my recommendation is to search for advice in the Sitefinity forums. 

The error is also discussed at

https://www.sitefinity.com/developer-network/forums/migrating-from-3-x-to-the-latest-sitefinity-version/migrating-from-3-7-to-4-2
https://www.sitefinity.com/developer-network/forums/migrating-from-3-x-to-the-latest-sitefinity-version/missing-dll

Best regards,
Rumen
Progress Telerik