I have upgrated Sitefinity 5.4 to 6.0 today. But now my custom widgets are returns me the following error:
Could not load file or assembly 'Telerik.Sitefinity, Version=5.4.4020.0, Culture=neutral, PublicKeyToken=b28c218413bdf563' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
I have rebuild my solution but nothing's changed. Can anyone help me?