Recently while trying to use KingswaySoft’ s CRM Connection Manager in the Script Component we got the below error Turned out the issue was because of the wrong version of KingswaySoft.IntegrationToolkit.DynamicsCrm assembly being referred. C:\Windows\Microsoft.NET\assembly\GAC_MSIL\KingswaySoft.IntegrationToolkit.DynamicsCrm Referencing the correct one fixed it. Hope it helps..