Database Seal: Transaction Log Backup, error in translog backup

I have changed the time for the maintenanceplan but i still get the same
message, could it be something wrong with the database?
a part from the last backuplog:
[31] Database SPS01_Config_db: Transaction Log Backup...
Destination: [D:\Program Files\Microsoft SQL
Server\MSSQL\BACKUP\SPS01_Config_db\SPS0
1_Config_db_tlog_200505100115.TRN]
** Execution Time: 0 hrs, 0 mins, 1 secs **
[32] Database SPS01_Config_db: Verifying Backup...
** Execution Time: 0 hrs, 0 mins, 1 secs **
Backup can not be performed on database 'VirtualCenter'. This sub task is
ignored.
End of maintenance plan 'UserDBs' on 2005-05-10 01:15:20
SQLMAINT.EXE Process Exit Code: 1 (Failed)You can not perform a transaction log backup on a database that uses the
simple recovery model. Set your database to either the full or bulk_logged
recovery model and you can make transaction log backups.
Jacco Schalkwijk
SQL Server MVP
"Biowaste" <Biowaste@.discussions.microsoft.com> wrote in message
news:35E8E641-6689-461A-A12C-CF1E69C08B8A@.microsoft.com...
>I have changed the time for the maintenanceplan but i still get the same
> message, could it be something wrong with the database?
> a part from the last backuplog:
> [31] Database SPS01_Config_db: Transaction Log Backup...
> Destination: [D:\Program Files\Microsoft SQL
> Server\MSSQL\BACKUP\SPS01_Config_db\SPS0
1_Config_db_tlog_200505100115.TRN]
> ** Execution Time: 0 hrs, 0 mins, 1 secs **
> [32] Database SPS01_Config_db: Verifying Backup...
> ** Execution Time: 0 hrs, 0 mins, 1 secs **
> Backup can not be performed on database 'VirtualCenter'. This sub task is
> ignored.
> End of maintenance plan 'UserDBs' on 2005-05-10 01:15:20
> SQLMAINT.EXE Process Exit Code: 1 (Failed)
>