We've just pushed Android Studio 2.0 Beta 2 to the canary channel.
This fixes an Instant Run related bug we discovered right after rolling beta 1 out.
Please give beta 2 a try; we believe we've fixed several critical issues that have prevented builds from working for a number of users in earlier previews:
Please note: You should uninstall your debug app from your device/emulator once, after updating to 2.0 Beta. This will remove some bad application state on the device that can affect Instant Run. We've fixed the bug which wrote the bad state in the first place, but this doesn't retroactively remove it from application state already on the device.
If all goes according to plan, we hope to roll this out to the beta channel in a few days, but we would highly appreciate feedback on this canary channel as soon as possible, in particular for Instant Run, to know whether it's really ready for beta on your real world applications.
Thanks for testing our preview builds, and please continue reporting bugs! (via Help > Submit Feedback.)
You can update your current 2.0 Preview installation to 2.0 Beta via the built-in patch mechanism (Check for Updates).
You can also update from 1.5 to 2.0 Beta via the patch mechanism, but you may not want to do that: See our page about how to keep multiple installations simultaneously while Studio is in preview mode.
You can also download a full zip of 2.0 Beta from the Android Studio 2.0 Beta 2 page.
If you run into problems, be sure to check the Known Issues page which we'll update as necessary.
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