[sudesh1456]

Hi Alain,
I’m getting this error.

output:
Check CURRENT_USER…
Found nothing
Check LOCAL_MACHINE…
Found something: C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE
Check if file exists
Found.
Check version
major: 14
minor: 0
Connect to PPT DLL
Connected to PPT DLL
Connect Error
System.InvalidCastException: Unable to cast COM object of type ‘Microsoft.Office.Interop.PowerPoint.ApplicationClass’ to interface type ‘Microsoft.Office.Interop.PowerPoint._Application’. This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{91493442-5A91-11CF-8700-00AA0060263B}’ failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).
at Microsoft.Office.Interop.PowerPoint.ApplicationClass.get_Presentations()
at check_ppt.Form1..ctor()
Unable to cast COM object of type ‘Microsoft.Office.Interop.PowerPoint.ApplicationClass’ to interface type ‘Microsoft.Office.Interop.PowerPoint._Application’. This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{91493442-5A91-11CF-8700-00AA0060263B}’ failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).
at Microsoft.Office.Interop.PowerPoint.ApplicationClass.get_Presentations()
at check_ppt.Form1..ctor()

Please help.

[Author]

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