Can't install a signed component in the GAC?

I try to install a strongly-signed component in the GAC by using drag-drop to the C:\WINDOWS\assembly directory but nothing happens No error messages, no entry added... nothing!

gacutil -I doesn't work either.

Even when I drag-drop a non signed assembly, I don't get an error message that should say , "Assembly is not strongly signed". Just nothing happening.

Why not?

Additional info:

I added following 2 lines in my component

[assembly: System.Reflection.AssemblyVersion("1.0.0.0")]

[assembly: System.Reflection.AssemblyKeyFile("ScientificToolsLib.snk")]

I have created the strong keyfile and everything builds just fine. Double checking with ildasm I see the key appearing in the manifest.

But still, I can't install it in the GAC???

thank you

Chris

Is this a .Net 4.0 assembly? The 4.0 GAC is under "C:\Windows\Microsoft.NET\assembly".