Although we're overjoyed at the release of a jailbreak so quickly after the arrival of iOS 8, there are still a number of tweaks that are currently incompatible with iOS 8. Even now that Cydia and Cydia Substrate have been updated, many tweaks still are inducing Safe Mode when installed on devices running the latest firmware, and developers will have to release updates for quite a few of their jailbreak tweaks before they become usable.