Excel error in Vb.net

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Hi i am developing an vb.net application where in i  open the excel file and mandipulate the data it it..i am getting the following error when i try to open the excel file.Please  help me.. 
"Unable to cast COM object of type 'Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000208D5-0000-0000-C000-000000000046}' failed due to the following error:  could not be found. (Exception from HRESULT: 0x80030002 (STG_E_FILENOTFOUND))."

Posted 5-Dec-12 16:20pm

Devkranth Kishore Vanja

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CHill60 6-Dec-12 12:07pm

Can you post the code that you are using to open the excel file

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