Angry Birds load error

I was just invited to update Angry Birds on my Win 7 computer, and after the update (and repair, and reinstall) I saw only the following at game load:

?::0:: attempt to index global 'flurry'(a nil value) (call stack not available)

And although I couldn't find a true fix (that would save my current game progress, grrr!) I did find that deleting the folder 

C:\Users\[username]1\AppData\Roaming\Rovio

let the game open as expected.

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