Message d'erreur: "la réponse du serveur n'est pas valide"

[john_mcclenahan]

See for example this earlier thread:

The subscription server response is invalid

I am trying to open files in my iMac and I keep getting an error message that says “The subscription server response is invalid. You can continue to use SketchUp, but you will not be allowed to start a new file or open an existing file.” I deleted the program and downloaded it again but nothing. Please help! I have a deadline and I need to resolve this ASAP