unfortunately I get Error and no new entity in database "FileNotFoundException: Could not load file or assembly 'System.Configuration.ConfigurationManager, Version=4.0.3.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified. Unknown location"
The error happened after installed the plugin. But there is no new entity in database.. Is there any step after install the plugin or external code out the plugin ?