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Migrating users...
<message>
<status>500</status>
<headers>
<Content-Type>application/x-dream-exception+xml; charset=utf-8</Content-Type>
</headers>
<body format="xml">
<exception>
<type>MySql.Data.MySqlClient.MySqlException</type>
<message>Table 'wikidb.mediawikiuser_groups' doesn't exist</message>
<source>MySql.Data</source>
<stacktrace>
<frame>MySql.Data.MySqlClient.MySqlStream.OpenPacket()</frame>
<frame>MySql.Data.MySqlClient.NativeDriver.ReadResult(UInt64& affectedRows, Int64& lastInsertId)</frame>
<frame>MySql.Data.MySqlClient.MySqlDataReader.GetResultSet()</frame>
<frame>MySql.Data.MySqlClient.MySqlDataReader.NextResult()</frame>
<frame>MySql.Data.MySqlClient.MySqlCommand.ExecuteReaderInternal(CommandBehavior behavior)</frame>
<frame>MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)</frame>
<frame>MySql.Data.MySqlClient.MySqlCommand.ExecuteDbDataReader(CommandBehavior behavior)</frame>
<frame>System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()</frame>
<frame>MindTouch.Data.DataCommand.Execute(Action`1 handler)</frame>
<frame>
<method>Mindtouch.Tools.MediaWikiDA.GetUsers()</method>
<file>C:\Documents and Settings\{user}\src\dekiwiki\trunk\src\tools\mindtouch.deki.mwconverter\MediaWikiDA.cs</file>
<line>78</line>
</frame>
<frame>
<method>MindTouch.Tools.MediaWikiConverterService.ConvertUsers()</method>
<file>C:\Documents and Settings\{user}\src\dekiwiki\trunk\src\tools\mindtouch.deki.mwconverter\MediaWikiConverterService.cs</file>
<line>475</line>
</frame>
<frame>
<method>MindTouch.Tools.MediaWikiConverterService.Convert()</method>
<file>C:\Documents andSettings\{user}\src\dekiwiki\trunk\src\tools\mindtouch.deki.mwconverter\MediaWikiConverterService.cs</file>
<line>986</line>
</frame>
<frame>
<method>MindTouch.Tools.MediaWikiConverterService.<PostConvert>d__4.MoveNext()</method>
<file>C:\Documents and Settings\{user}\src\dekiwiki\trunk\src\tools\mindtouch.deki.mwconverter\MediaWikiConverterService.cs</file>
<line>1008</line>
</frame>
<frame>MindTouch.Dream.Coroutine.Iterate_Helper(IEnumerator`1 coroutine, TaskBehavior behavior)</frame>
<frame>System.VoidClosure`2.Closure()</frame>
<frame>MindTouch.Dream.Task.Execute(VoidHandler handler, TaskBehavior behavior)</frame>
</stacktrace>
</exception>
</body>
</message>
This appears to be casued by a different MySQL table name for MediaWiki groups. The converter is expecting a table name of mediawikiuser_groups, while older versions of MediaWiki use a table name of user_groups. To fix it, open the MediaWikiDA.cs file, go to the GetUsers() method and change the SQL command to the following:
MediaWikiConverterContext.Current.MWCatalog.NewQuery(String.Format("SELECT user_id, user_name, user_real_name, user_password, user_newpassword, user_email, user_options, user_touched, user_token, (select count(*) from user_groups where ug_user=user_id and ug_group='sysop') as user_sysop from {0}user order by user_touched DESC", MediaWikiConverterContext.Current.MWUserPrefix)).Execute(delegate(IDataReader dr) {
