I received the following errors when I tried to install the survey module 04.50.00:

Failure     ExceptionSystem.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Common.Utilities.Config.AddCodeSubDirectory(String name) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.CreateModuleFile(PaFile File, PaFolder Folder) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.CreateFiles(PaFolder Folder) at DotNetNuke.Modules.Admin.ResourceInstaller.PaDnnInstallerBase.Install(PaFolderCollection folders) at DotNetNuke.Modules.Admin.ResourceInstaller.PaInstaller.Install()

This is the first time I've tried to install it and I used the updated install zip instead of installing the one that came with the original dnn install -- apparently that was the wrong thing to do?

Now the Survey module is not listed under Installed or Available modules.  Any idea how to uninstall and then reinstall?

Thanks, Joan

I'm using DNN version 04.09.00

Yes, I can install other modules.  I had upgraded DNN to 04.09.00, and then I upgraded all the modules that had newer versions.  The only one that caused an error was the survey module.  The only difference is that for all modules except survey, I installed them from the "Available Modules" (version from my original installation) and then upgraded them by pointing to the newer zip file.  The Survey module I used the upgraded zip file instead of first installing the one that came with the original install.

Yes, I did try to install it a second time.  I got the error:

StartJob     Start Sql execution: 03.03.00.SqlDataProvider file
Failure     SQL Execution resulted in following Exceptions: System.Data.SqlClient.SqlException: Column names in each table must be
unique. Column name 'IsCorrect' in table 'dbo.SurveyOptions' is specified more than once. at
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream,
BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at
System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) at
System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at
System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at DotNetNuke.Data.SqlDataProvider.ExecuteADOScript(String SQL) at
DotNetNuke.Data.SqlDataProvider.ExecuteScript(String Script, Boolean UseTransactions) ALTER TABLE dbo.SurveyOptions ADD
IsCorrect bit NOT NULL CONSTRAINT DF_SurveyOptions_IsCorrect DEFAULT 0
EndJob     End Sql execution: 03.03.00.SqlDataProvider file

There are no errors in the Event Log after I tried to install it.  There's nothing in the Event Log referring to the Survey module at all.  All others have an entry "Install Module: xxx".

Any way to backdoor it and delete any tables / records in the db and try to install again?