Hi,

Not sure if this is the right group for this but I think it could
loosely be described as an interop problem since it is the interop dll
I can't get to work.

Can anyone tell me how to install the Microsoft.mshtml.dll correctly?

I am running VS2005.
I have a C# project which uses mshtml and works perfectly on my
machine.

I have installed it and everything works except the mshtml calls.

I get the following error:

System.InvalidCastException: Unable to cast COM object of type
'System.__ComObject' to class type 'mshtml.HTMLAnchorElementClass'.
COM components that enter the CLR and do not support IProvideClassInfo
or that do not have any interop assembly registered will be wrapped in
the __ComObject type. Instances of this type cannot be cast to any
other class; however they can be cast to interfaces as long as the
underlying COM component supports QueryInterface calls for the IID of
the interface.

I am referencing and installing the version from of the interop dll
from "C:\Program Files\Microsoft.NET\Primary Interop Assemblies".

I have tried copying it into "\Windows\assembly" and it made no
difference.

I have tried creating my own version of the dll (both sign and
unsigned) and it made no difference.

I have found a lot of questions about this sort of mshtml problem on
the groups but no answer.

If I install Visual Studio it'll work so I assume Visual Studio knows
how to install it correctly and I hope that means it is documented
somewhere.

Any help appreciated because I am completely out of ideas.

    Thanks, Vin