Error in DWSIM Open-CAPE editor

I'm constantly getting this error when i trying to do anything with Cape-open.

Unable to cast COM object of type 'System.__ComObject' to interface type 'CapeOpen.ICapeUnit'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{678C0998-0100-11D2-A67D-00105A42887F}' failed due to the following error: Não há suporte para esta interface (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).

I tried reinstalling the dwsim app thrice but still this error is consistent.

DWSIM 12-06-21, 9:34 p.m. Blahblahbu
Are you using more than one installation of chemsep in your system? Have you installed all the four components while installing DWSIM?
21-06-21, 11:54 a.m. Priyam_Nayak

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