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Could not load file or assembly 'Telerik.Web.UI, Version=2015.3.930.40


When running Setup Manager with Configure option, the installer fails with following error:
Logged Error: Error from controlutil output: RegisterControlTypes Failed: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
Could not load file or assembly 'Telerik.Web.UI, Version=2015.3.930.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4' or one of its dependencies. The system cannot find the file specified.


Error Code




1) Copy Telerik.Web.UI.dll from the 5.4 install media ([Extracted Folder]\K2 Platform Classic (5.4) (5.0005.1000.1)\Installation), it should be the 2015.3.930.40 version. 

2) Replace in the following locations

C:\Program Files (x86)\K2 blackpearl\Bin\ControlPack Controls\Telerik.Web.UI.dll

C:\Program Files (x86)\K2 blackpearl\K2 smartforms Designer\bin\Telerik.Web.UI.dll

C:\Program Files (x86)\K2 blackpearl\K2 smartforms Runtime\bin\Telerik.Web.UI.dll

3) Run the setup manager from Windows Start menu in recovery mode to complete the reconfigure.


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Last update:
‎09-16-2021 12:53 PM
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