I have had this error:
'COM Interop registration failed. Type library exporter can not load
required library MSCOREE.TLB.'
I have found a solution, by using the Regmon tool
(http://www.sysinternals.com/Utilities/Regmon.html) - "Extremly cool tool",
I might say. If you remove these keys from you registration database,
it might be working again.
HKEY_CLASSES_ROOT\TypeLib\{5477469E-83B1-11D2-8B49-00A0C9B7C9C4}\2.0
HKEY_CLASSES_ROOT\TypeLib\{BEE4BFEC-6683-3E67-9167-3C0CBC68F40A}\2.0
HKEY_CLASSES_ROOT\TypeLib\{215D64D2-031C-33C7-96E3-61794CD1EE61}\2.0
See if it works. If not keep you Visual Studio.NET running, and use the
regmon by filtering all calls fra DEVENV.
Try compiling, if an error comes up, search through you capture in regmon
for eg. 'v2.0.40607' (if that is the version that you have uninstalled).
Hope this works for you too.
Sincerely
Janus Kamp Hansen
http://www.kamp-hansen.dk