Unable to cast COM object of type 'RDPCOMAPILib.RDPSessionClass' to interface type 'RDPCOMAPILib.IRDPSRAPISharingSession2'

Full Error:

Unable to cast COM object of type 'RDPCOMAPILib.RDPSessionClass' to interface 
type 'RDPCOMAPILib.IRDPSRAPISharingSession2'. This operation failed because 
the QueryInterface call on the COM component for the interface with IID 
'{FEE4EE57-E3E8-4205-8FB0-8FD1D0675C21}' failed due to the following error: No 
such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).

This is part of a remote destop viewing application very similar to this:

http://daron.yondem.com/software/post/d8bbab27-169d-43d4-aea7-494845891789

Error fires on this line

Dim x As New RDPSession
AddHandler x.OnAttendeeConnected, AddressOf Incoming
x.Open()

App coded in Windows 10 and works fine on it, error is happening on Windows 7 (although I think Vista onwards is supported?)

Any help would be greatly appreciated, thanks.