Cannot edit maintenance plans post SP2

I have some maintenance plans written for SQL Server 2005 SP1. After we
upgraded to SP2 I can no longer edit them. If I select the Maintneance Plans
node in Object Explorer and double click on any plan I get "Microsoft SQL
Server Management Studio is unable to load this document: One or more error
occured."
The popup message box says "Value cannot be null. Parameter name: component
(System.Design)"
Details are:"
Program Location:
at
System.ComponentModel.Design.DesignerHost.System.C omponentModel.Design.IDesignerHost.GetDesigner(ICo mponent component)
at
Microsoft.DataTransformationServices.VsIntegration .DtsDesignerService.OpenDesigner(String connectionString, Object connection, String objectUrn)
at
Microsoft.SqlServer.Management.DatabaseMaintenance .MaintDesignerMenuHandler.Invoke()"
I saw one post that sugget there is a fix that ought to be in cumulative
update package 4, but I can't see any items in that which match this problem.
The maintenance plans appear to run when called by the SQl Agent Jobs they
were initially set up with. However, I am calling one of them from another
Job and this has started throwing this error since SP2:
"Error: 2007-11-04 18:00:01.81 Code: 0xC0024104 Source: Reporting
Task for subplan-{03E683E8-5A40-4697-BF2F-E93EBA6E96E7} Description: The
Execute method on the task returned error code 0x80131904 (Conversion failed
when converting from a character string to uniqueidentifier.). The Execute
method must succeed<c/> and indicate the result using an "out" parameter.
End Error"
but when I went to look at the plan, I couldn't edit it!
Any advice on how to edit the maintenance plans or fix the second error
would be great.
Thanks,
Charles
Yes. From Help -> about:
"Microsoft SQL Server Management Studio9.00.3042.00
Microsoft Analysis Services Client Tools2005.090.3042.00
Microsoft Data Access Components (MDAC)2000.085.1117.00
(xpsp_sp2_rtm.040803-2158)
Microsoft MSXML 2.6 3.0 4.0 5.0 6.0
Microsoft Internet Explorer6.0.2900.2180
Microsoft .NET Framework2.0.50727.832
Operating System5.1.2600"
"Tibor Karaszi" wrote:

> Did you install sp2 for the clients components (SSMS) on the machine where you try to edit the plan?
> --
> Tibor Karaszi, SQL Server MVP
> http://www.karaszi.com/sqlserver/default.asp
> http://sqlblog.com/blogs/tibor_karaszi
>
> "CharlesB1" <CharlesB1@.discussions.microsoft.com> wrote in message
> news:CC70B322-EBCB-4D2E-B1DA-98AAEDDBF86A@.microsoft.com...
>
>
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