If installing the latest version does not help, check for OS updates. Support for SHA1 (file signature format, including drivers) has been discontinued and certificates are no longer issued.
FxSound uses the current SHA-256 format, so Windows 7 requires updates to SHA-2 (sha-256).
Here is some supporting information:
https://support.microsoft.com/topic/10b58bd9-5ba2-b23d-498b-139ce5c709af
Information from another major developer
The Microsoft security updates that support SHA-256 must be installed in order to operate correctly on computers running Windows Vista, Windows 7, Windows Server 2008 and Windows Server 2008 R2.
- For Windows Vista, install SP1 and SP2 sequentially and then install the KB4090450 update. (*)
- For Windows 7, install SP1 and then KB3033929 or KB4474419 or KB4054518.
- For Windows Server 2008, install SP1 and SP2 sequentially and then install update KB4474419 or KB4039648 or KB3033929.
- For Windows Server 2008 R2, install SP1 and then KB4474419.
Install updates and SPs if they were not previously installed. You can install them manually (after getting them by following the links mentioned above) or via Windows Update.
The updates for working with SHA-256 may also be available in other Windows updates.
(*) The official service pack for Windows Vista is not provided but you can install the Windows Server 2008 service pack.