March 16, 2017 Android Studio 2.4 Preview 2 is now available.
Please update to this version from Android Studio 2.4 Preview 1 as soon as possible. Unfortunately due to issues in preview 1 we are not able to offer patches.
The release is available in the canary channel, so you can check for updates via Help > Check for Update... (on OSX, look in the Android Studio menu). This will download and install a patch rather than download a full IDE image.