_BSMachError while running Stanford's CS193p Smashtag app
I downloaded the Smasthag demo app from course's site. Project builds fine (after small changes in Twitter, TwitterRequest etc. classes, because I use the latest Xcode 7b4) and works fine on simulator (I also had to add NSAppTransportSecurity key to info.plist), but not on a device - it doesn't fetch tweets . I tested it on both iPhone 6 with iOS 9 Public Beta and iPad 2 with iOS 8.4. Moreover, when app is running in the simulator and I change hashtag to search, whole tableView reloads with new tweets, but in the console I get this:
2015-07-23 03:24:15.560 Smashtag[25991:4344251] _BSMachError: (os/kern) invalid capability (20)
2015-07-23 03:24:15.560 Smashtag[25991:4344251] _BSMachError: (os/kern) invalid name (15)
App still runs fine, but this error bugs me. I couldn't fine anything about this _BSMachError in google (just one lonely Indonesian tweet). I can't also get why app doesn't fetch tweets on a device.
Answer
This seems to be an iOS 9 Beta bug. It definitely is related to presentation and dismissal of UIKeyboard (the system one). And, at that it doesn't happen all the time.
It's harmless, just annoying. The bug will probably be resolved in the next beta since its in a core system object.