Facebook Messenger Crashing Instantly On iOS 11; Crash Log References ‘CryptoTokenKit’

Facebook Messenger appears to be crashing almost instantly for some iPhone owners. A mobile developer suspects the culprit may be an obscure “CryptoTokenKit” found in the latest version of the software.

Facebook’s massive messaging platform has over 1.2 billion users. But potentially hundreds of millions of iPhone owners who are upgrading to Apple’s latest operating system, iOS 11, may not be able to use the app until Facebook updates it.

I stumbled across the problem personally by updating Messenger on September 18, and then upgrading to iOS 11 yesterday, the 21st. Messenger now opens for about two seconds and immediately quits, repeatedly and reliably, even after a full phone restart.

Sometimes problems like this are something that is unique to one person’s particular situation. In this case, however, many others appear to have the same problem.

A quick check via Facebook friends revealed at least six other casualties in just 14 minutes, including NY Times and USA Today journalist Jennifer Jolly. And dozens of people have posted recently about the problem on Twitter:

John Koetsier

Facebook Messenger is crashing on iOS 11

Facebook updates Messenger and the main Facebook up regularly and frequently, and generally without issue or complication. It looks like this time, however, the updated operating system or some unrelated problem has caused problems.

A mobile developer I contacted, Albert Renshaw, captured a logfile generated when Messenger crashed on his phone, and found an odd reference to a system framework called “CryptoTokenKit:”

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