Question mask not working for image occlusion add on

I have been creating cards in Anki 2.1 using the enhanced image occlusion add on. I have been following all tutorials carefully. However, when I am studying, the question mask doesn’t appear, but rather appears when I click “show answer.” When I go to edit the card, it shows the mask under question mask and answer mask. If I delete the entry for answer mask, the mask disappears altogether. I have tried everything I can possibly think of (deleting it and putting it back, restarting anki, making new cards, and even deleting and redownloading the image occlusion add on), but I cannot get the mask to show on the front of the card.

Me too! Did you ever find a way around this?