Error: Unable to cast object of type 'Blackbaud.AppFx.Platform.UIModel.Query.SmartQueryInstanceAddDataFormUIModel' to type 'Blackbaud.AppFx.Platform.UIModel.Query.SmartQueryInstanceEditDataFormUIModel' when creating a LYBUNT constituents (revenue) smart

Error: Unable to cast object of type 'Blackbaud.AppFx.Platform.UIModel.Query.SmartQueryInstanceAddDataFormUIModel' to type 'Blackbaud.AppFx.Platform.UIModel.Query.SmartQueryInstanceEditDataFormUIModel' when creating a LYBUNT constituents (revenue) smart Query 
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch. 

Environment

 3.0.516
 3.0.516, Service Pack 10

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