Today, I updgraded my Android Studio installation to version 2.0. I updated it manually (download the .zip, because the update mechanism just telled me that there is a new v
I hope this will solve your problem.
I had a freshly installed latest Android Studio and perform all basic steps to run a 'Hello World' project in emulator
but had a same problem while running emulator from avd manager.
After that i tried running emulator from command line also but faced same problem.
After long debugging i came to find out that it was missing some core library,
and then solved the problem by selecting checkbox and install emulator from Android Studio Options.
Tools -> Android -> SDK Manager -> SDK Tools -> Android Emulator
And click Apply and Run project again.
Now its working like a charm.