Can't create workbook with VS.NET 2005
 

Hi,
I wander if this is the right group to post this question. If it is not,
please indicate which one would be most appropriate.
I Use VS.NET 2005 to automate Office applications, Word and Excel mostly.
But for the last few days, all the applications I have refuse to create or
open Excel workbooks. For some reason, I get the following message: "Old
format or invalid types library - HRESULT: 0x80028018 (TYPE_E_INVDATAREAD)".
Has anyone seen that mesage before? Can anyone help me.
I use Office 2007 but still have 2003 installed.
Thanks.
--
Jac Tremblay