Event log error fix for RS errors after SQL 2005 installed

If you get errors in the event log saying this not long after a new install of SQL Server 2005 standard or enterprise:

.NET Runtime Optimization Service (clr_optimization_v2.0.50727_32) - Failed to compile: Microsoft.ReportingServices.QueryDesigners, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91 . Error code = 0x80070002

To Fix, drag
C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\PrivateAssemblies\Microsoft.ReportingServices.Design.dll
to
C:\WINDOWS\assembly

To install the offending library to the GAC.
Double check all is fine:

C:\WINDOWS\microsoft.net\Framework\v2.0.50727\ngen executeQueueditems

Most annoying...