sql2005 error

Can you please share the script for that?

Hi Usman, Thanks For your response then my script is

DECLARE @jobId BINARY(16)
EXEC @ReturnCode =  msdb.dbo.sp_add_job @job_name=N'DailyDiffBackupForTaxExcise.Subplan_1', 
       @enabled=1, 
       @notify_level_eventlog=2, 
       @notify_level_email=0, 
       @notify_level_netsend=0, 
       @notify_level_page=0, 
       @delete_level=0, 
       @description=N'No description available.', 
       @category_name=N'Database Maintenance', 
       @owner_login_name=N'Administrator', @job_id = @jobId OUTPUT
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
/****** Object:  Step [Subplan_1]    Script Date: 06/01/2012 00:53:42 ******/
EXEC @ReturnCode = msdb.dbo.sp_add_jobstep @job_id=@jobId, @step_name=N'Subplan_1', 
       @step_id=1, 
       @cmdexec_success_code=0, 
       @on_success_action=1, 
       @on_success_step_id=0, 
       @on_fail_action=2, 
       @on_fail_step_id=0, 
       @retry_attempts=0, 
       @retry_interval=0, 
       @os_run_priority=0, @subsystem=N'SSIS', 
       @command=N'/Server "$(ESCAPE_NONE(SRVR))" /SQL "Maintenance Plans\DailyDiffBackupForTaxExcise" /set "\Package\Subplan_1.Disable;false"', 
       @flags=0

Ok, seems like you are using maintenance plan wizard from SSIS. I have updated the tags accordingly. Frankly speaking, I am not a fan of maintenance plans. They sometimes behave abnormally.

Are you using exactly the same configuration of server version / client version that you originally used? Have you applied a service pack in the mean time in one place but not another?

What version of SSMS? What exact version of SQL Server?

I am using SQL Server 2005 Standard Edition and SSMS also same version.