em client dosn't start

System.Data.SQLite.SQLiteException: The database disk image is malformed
malformed database schema (idx_Columns) - no such table: main.Columns
bei System.Data.SQLite.SQLite3.Prepare(SQLiteConnection cnn, String strSql, SQLiteStatement previous, UInt32 timeoutMS, String& strRemain)
bei System.Data.SQLite.SQLiteCommand.BuildNextCommand()
bei System.Data.SQLite.SQLiteCommand.GetStatement(Int32 index)
bei System.Data.SQLite.SQLiteDataReader.NextResult()
bei System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)
bei System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
bei System.Data.SQLite.SQLiteCommand.ExecuteNonQuery()
bei System.Data.SQLite.SQLiteConnection.Open()
bei DbRepair.DbTools.OpenConnection(String fileName)
bei DbRepair.Form1.CheckCorruption()
bei DbRepair.Form1.Check(Object state)

Please back-up your database from the following location than delete them:

C:\Users%Current User%\AppData\Roaming\eM Client (Vista/Win7)
C:\Documents and Settings%Current User%\Application Data\eM Client (XP)

Let me know if the error persist after you delete the database.

Hi,
in case you do not have your data backed up, leave the error message opened and export your data (mails, contacts, events, tasks). Afterwards you can delete the database, and import your data to the fresh eM Client.

Regards,
George Wilson