In version 7, the COM Compatibility of the dll was removed.
In order to use some functionnalities of DeMaSy in VBA module, you can use the DLL DeMaSyNET_FrmLoad. This DLL (It is is the only one) is COM Compatible.
You can register it on your post with the following command line
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe “C:\Progra
m Files (x86)\Silicon DNA\DeMaSy\DeMaSyNET_FrmLoad.dll” /tlb “C:\Program Files (
x86)\Silicon DNA\DeMaSy\DeMaSyNET_FrmLoad.tlb” /codebase