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When upgrading to K2 blackpearl 0807 (4.8210.2.450) with running instances two issues are encountered with Delegation. Note: All new instances started after the upgrade can be successfully delegated.
When a workitem in the K2 Workspace user is delegated an error is displayed.
When using the SourceCode.Workflow.Management API to delegate a workitem or delegating from Management Console worklist an error is thrown in Visual Studio and the K2 Server stops functioning.
This Hotfix is contained within the latest K2 blackpearl 0807 Update. Install the update package to resolve the error.
The latest K2 blackpearl 0807 Update is available as an independent installation package which can be found here: https://portal.k2.com/downloads/bp/default.aspx