Post 2005 SP2 Install, No Script Component Can Be Edited.

Anyone starting to see "Cannot show Visual Studio for Applications editor. (Microsoft Visual Studio)" after installing SQL Server 2005 SP2 on x86 machines?  Second, how can it be fixed?

After installing SP2, the script component editor will not edit script components created in pre SP2 releases. (I also have Visual Studio 2005 SP1 installed). The script TASK editor will start, but when attempting to open a script COMPONENT in the VSA editor, a script component created for pre-SP2 packages, the following error dialog occurs.

Cannot show Visual Studio for Applications editor. (Microsoft Visual Studio)

This same error dialog has occurred on multiple computers, none of them are running Vista (rather Windows XP SP2). All of the pre-existent pre-SP2 script components have Precompile set to true as well, since they are intended for 64 bit machines.

Now, certain posts say, register DLLs in the following directories via:
for %i in (*.dll) do RegSvr32 -s %i.

C:Program FilesCommon FilesMicrosoft SharedVSA8.0common
C:Program FilesCommon FilesMicrosoft SharedVSA8.0vsa

One problem with these instruction is that the second directory doesn't even exist, however, a directory called "C:Program FilesCommon FilesMicrosoft SharedVSA8.0VsaEnv" does exist, which is perhaps what was meant. Even after registering the DLLs there, the script component editor will not open (erroring out after clicking the "Design Script..." button).