Error: The function deleteSelection() is currently unavailable.

[geraldopp]

I have a short animation which I have optimized and basically reduced to merely classic tweens and simplified movie clips. Nothing fancy. But for some strange reason I am getting this error:

Error: The function deleteSelection() is currently unavailable.

Here is the animation. Can you please take a look at it, or maybe give it a shoot to see if you have better luck than I did:

Thanks in advance! I appreciate your time.