A bug in Facebook's software appeared late Tuesday that caused some iPhone apps using the service to crash instantly, according to developers that spoke with CNET.

The bug was originally thought to be with Facebook's application programming interface, which enabled developers to publish feed stories into their apps. Facebook reminded developers on Monday that the old APIs would be turned off on Tuesday, a plan that had been in the works since last October.

Chris Diskin of Nodconcept, makers of Emoti, an iPhone app that enables users to post status messages on Facebook with custom emoticons, said his app stopped working on Tuesday afternoon, after the old APIs were supposed to be turned off. However, Facebook representatives later said a bug in the software, not the company's APIs, caused the issue.

More: http://news.cnet.com/8301-17939_109-10428336-2.html