SQL 2005 SP2 - Cannot open Data Flow Task in SSIS

I have just installed Service Pack 2 on my SQL 2005 Standard Edition.
However, now all my SSIS packages will not allow me to open my Data FLow Tasks. I get the following error:
TITLE: Microsoft Visual Studio
Cannot show the editor for this task.
ADDITIONAL INFORMATION:
The task returned an unsupported control editor type. (Microsoft.DataTransformationServices.Design)
If I try to create a new Data Flow task I get:
TITLE: Microsoft Visual Studio
Failed to create the task.
ADDITIONAL INFORMATION:
The designer could not be initialized. (Microsoft.DataTransformationServices.Design)
I have tried to install the latest hotfixes after this but they had no effect.
Can anybody help me???? Please?

I have had this same issue, where tasks would open fine in an SSIS package until SP2 was installed and then I get the same issue as noted above, i.e. :
TITLE: Microsoft Visual Studio
Cannot show the editor for this task.
ADDITIONAL INFORMATION:
The designer could not be initialized. (Microsoft.DataTransformationServices.Design)
If anyone has some ideas on this, it would be greatly appreciated.

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shouldnt setting be Result
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