When using an ObjectDataSource in the standalone report designer I am unable to preview the report. When I click the preview button I get an error that reads:
"An error occurred while invoking data retrieval method.
Exception has been thrown by the target of an invocation.
Could not load file or assembly 'System.Data.SqlClient, Version=4.6.1.1, Culture=neutral, PublicKeyToken=' or one of its dependencies. The system cannot find the file specified.."
"An error occurred while invoking data retrieval method.
Exception has been thrown by the target of an invocation.
Could not load file or assembly 'System.Data.SqlClient, Version=4.6.1.1, Culture=neutral, PublicKeyToken=' or one of its dependencies. The system cannot find the file specified.."