When she reviewed Phil Fish's critically acclaimed indie game Fez earlier this year, our own Tina Amini noted that she experienced a few crashes while playing through the game. The intermittent glitchiness were a known issue and dev studio Polytron has been working on a title update to fix it.
But don't go grabbing that update just yet because it apparently makes Fez game saves read as corrupt. In a post on the studio's official site, Polytron programmer Renaud Bedard advises players on the situation:
UPDATE : BAD NEWS EVERYONE.
There is an issue that seems fairly widespread where the save file can be seen as corrupted by the game after installing the patch. We're floored that this wasn't found in testing. For the moment, deleting your system cache should resolve the issue, but if that fails, there is no known workaround. We'll keep you updated on the situation.
It sounds like the patch might need a patch. Right now, it seems that the best thing to do is to not download the title update at all.
UPDATE IS LIVE [Polytron]