Allò: il problema è sfortunatamente noto e diffuso (si verifica anche su X360 e PC), e non è neanche l'unico del gioco (un altro bug noto riguarda auto con valore 0, upgrade o possesso di un veicolo non riconosciuti).
Codemasters dovrebbe già avere inviato un primo bugfix a Sony e MS per approvazione, ergo a breve dovrebbe arrivare una patch in grado ("we expect", nota bene) anche di aggiustare i file. Tempistiche però non mi pare ce ne siano.
In the last couple of days we've been receiving reports that players were experiencing save files becoming corrupt. Since then the team have been working tirelessly to not only diagnose the problem but also create a fix.
We can now confirm that we have located the cause of this problem and a fix has been created and applied to a patch. This patch is currently undergoing QA tests to ensure that it is working as expected before we deploy it to the live servers.
Once this patch has been pushed live we expect those saves that have been corrupted to be 'fixed' and you'll once again be able to carry on your GRID Autosport career where you left off.
A big thank you to those Community members that have sent us their corrupt save files, these have been a huge help and have gone a long way to helping us correct this issue.
We'll bring you further news closer to the patch deployment time.