CUI Error? Here’s How To Fix Crashing Problems With OS X 10.7.3 Update

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For a lot of people, yesterday’s 10.7.3 update for OS X Lion went without a hitch using Software Update, but for a sizable (and understandably annoyed) minority, the update resulted in the widescale crashing of apps and the replacement of stock Lion UI elements with a mysterious “CUI?” error.

If you’ve been bit by this error, you have our sympathies, but buck up! In most cases, it’s a pretty easy thing to fix the update and get Lion working as it was.