App Inventor Emulator Crashed

Oh no. Did you Try again?

There are many reasons you might see a display like you show.

  • Not updating the emulator
  • an issue with your Project. Large audio or image files, a coding mistake, attempting to use a component for which the emulator can not 'emulate' the hardware, attempting to close a Screen, etc. We do not know. If you share your Project blocks you were using when you got the error here, someone might provide specific advice.

Please provide more information and someone can assist you.

See this page for emulator advice, if you don't want to post your project ...