INSTALL_FAILED_DEXOPT: Can't install app on Android Emulator

That’s interesting. I’ve seen the stackoverflow link you provided. I did try yesterday everything there and it didn’t help. What I just did to fix my issue was:

  1. Navigate to the /Users/user_xxx/.android/avd/Nexus6API22.avd
  2. Delete all the locks via: $rm *.lock
  3. Wiped Data via AVD Manager
  4. Restart the Emulator
  5. Success.

Thanks!