Cannot open UNICO-GUI pkg on MacOS Ventura

[andfer]

When trying to download either Unico-GUI 9.14.6 or 9.13.0 I keep getting the error below.

Any idea how to solve that on MacOS Ventura? I have already tried opening the pkg with control+right click, etc. with no success.

[JanSonnek]

Hi andfer, I have taken one step forward in this problem by executing Terminal command on the pkg:
xattr -cr Downloads/Unico-GUI_v9.14.6_MACOSX/Unico-GUI-9.14.6.0.pkg

Now the installer launches but it reports:

Unico-GUI-9.14.6.0.pkg can’t be installed because its digital signature is not trusted. The package was signed with a certificate that was revoked. This package might not install what you expect. Obtain a new copy of the package and try again.

I haven't gotten any further yet.

[sparrow]

The error is because the package was not properly signed. The certificate seems to have been revoked by the issuing authority (see attached image).

Spoiler

The package is signed with a certificate that is expired or was revoked by the Certificate Authority. Although the certificate may have been valid at the time the package was signed, this can't be verified.

Quite a disappointment for a Mac user trying to evaluate and justify using their hardware. Bummer.:\