GOG Galaxy 2.0.80 Beta Breaks Game installation (Error E2)

[Ryonez]

This is more a notice, you can work around it but users need to be aware not to update the client.

There's a link on GOG's forms with more info here, GOG Galaxy 2.0.80 Beta, but the jist is the new 2.0.80 Beta client results with games having E2 errors when installing. No game will work with the client atm.
Rolling back to version 2.0.77.22 of the client does work, but you need to make sure not to update for now.
For myself, I replaced the GOG client link in the plugin to one of this older version to install it.

[moraroy]

@Ryonez does steams Proton 9.0.3 help?