System.InvalidCastException: Unable to cast COM object of type 'Acrobat.AcroAppClass' to interface type 'Acrobat.CAcroApp'

Hi,

We are using acrobat in our project to procees PDF files.

In one of our client machine, we are getting bellow exception while creating 'Acrobat.AcroAppClass' object.

"System.InvalidCastException: Unable to cast COM object of type 'Acrobat.AcroAppClass' to interface type 'Acrobat.CAcroApp'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{9B4CD3E6-4981-101B-9CA8-9240CE2738AE}' failed due to the following error: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY))."

Code we used:

--------------------

CAcroApp objApp = new AcroAppClass();

.......

objApp.Exit();

AcroAPPClass is derived from CAroApp interface, so type casting is correct only, but we are getting issues.

This issue is happening in particular machine only.

Acrobat version in client machine:

Please help us to solve the issue.