Dear all,

I downloaded Article module from www.efficionconsulting.com and it seemed very good.

I modified it and when installed it in my dnn site this error appeared to me

 Registering DesktopModule

Failure ExceptionSystem.Data.SqlClient.SqlException: Violation of UNIQUE KEY constraint 'IX_ModuleDefinitions'. Cannot insert duplicate key in object 'ModuleDefinitions'. The statement has been terminated. at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream) at System.Data.SqlClient.SqlCommand.ExecuteScalar() at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteScalar(SqlConnection connection, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteScalar(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters) at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteScalar(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Data.SqlDataProvider.AddModuleDefinition(Int32 DesktopModuleId, String FriendlyName, Int32 DefaultCacheTime) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.RegisterModules(PaFolder Folder, ArrayList Modules, ArrayList Controls) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.Install(PaFolderCollection folders) at DotNetNuke.Modules.Admin.ResourceInstaller.PaInstaller.Install()
 
  I edited article module definitions : I didn't found any control in this module so I added these controls manualy and it worked well after

I want to know what is the reason ?!