COM Interop registration failed. Type library exporter can not load required
library MSCOREE.TLB.

I'm currently receiving the above error message when building a sample
walkthrough which demonstrates COM interopability between ESRI's ArcGIS 9.1
and .NET. I'm using VS.NET 2003 Enterprise Developer and creating the
assembly in VB.NET (C# is not an option).

The SQLServer 2005 Beta 2 had been installed on the machine, but it was
uninstalled (about a year ago) when its version of the .NET Framework
(2.0.40607) was incompatible with ArcGIS 9.1. ArcGIS seems to have worked
fine after that.

Encountering this new problem, it appears that the uninstall of SQL Server
2005 Beta 2 was not clean, leaving at least one of the beta framework
components (MSCOREE.DLL) in the Windows\System32 folder (probably because it
was in use at the time) and a considerable number of registry entries.
Replacing the DLL with the earlier version (1.1.4322.573) has not fixed the
problem.

Has anyone else encountered this error after having installed the beta 2.0
.NET Framework and were then able to fix the problem without re-formatting
the drive? Any step-by-step instructions would be appreciated. I don't have
permissions to edit the registry, but I can pass any instructions on to
those who do.

Thanks in advance,

John