Unable to Cast COM object system to adodb recordset

I compiled a project with custom dll and ran fine on my machine running Windows 7 but when i put it on a machine running windows Server 2008, I get this error:

unable to cast com object of type 'system.__comobject' to interface type 'adodb recordset'

Anyone have a clue on how to fix it?

Edit: There is no code because the error doesnt happens when i debug/run it,开发者_JS百科 it happen when after i installed my program on the server machine and i try to run it but on my machine it is fine

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Does the W2008 system have ADO to begin with? ADO comes with the package known as "MS data access components". Also note the bitness - if your program is 32-bit, you need 32-bit ADO installed and vice versa; 32-bit ADO and 64-bit ADO are two different packages.