I bypassed the "Upgrading Progress" loop!
I just posted this as a reply in another thread, but wanted to repost to possibly reach as many frustrated people as I could here for the weekend before Finland's Monday Fix.
I was able to bypass the “Upgrading Progress” loop! (Android)
(And dang I’m so frustrated with the Rovio developers for all the months of game glitches. I have to say worst QA/QC of any game I’ve ever played… However the game is AWESOME when it’s not glitching, so I take the frustrations in stride as much as I can.)
I digress… So I had the stuck-at-38%-loading thing going on, reinstalled the game, unlocked bumblebee, and got the Updating Progress Bug. Cleared RAM, restarted tablet, etc etc.. to no avail.
BUT, a fraction of a second before all the Updating Progress thing, I was able to quickly tap on a completed mission, collect my stuff, and now I have been playing the game successfully.
WORTH A SHOT, FOLKS! good luck. It took me about 10-15 attempts tapping on the screen to make it work, but hope it sticks!