Specifically 4 times the game crashed when I pressed a button for the first time after the battle had begun (3 times it was the fire button, 1 time the roll button). The 5th time I tried the boss fight the game simply froze. The boss still fired at me but I couldn't press any buttons, because none of them worked.
Dunno, if other players have this issue, but I sure do
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EDIT: I think the battle may have worked once. The very first time I entered the community event I killed something called an Aries class heavy cruiser with 7000 hull. I thought it was an underling, not the boss but maybe I was wrong.
Anyway - each time I tried it afterwards I experienced the crashes mentioned above
EDIT II: I initially had the same problem during this week's life event and (mostly) managed to fix it by rebooting the phone.
My ship on my iPad 4th generation rampages through the bosses. My ship in the iPhone 4s crashes every three to fourth battle. I clear the memory cache to get back in. Sometimes I have to shut down completely. (I use my iPads ship to clear the way so I only have to fight the bosses with my iPhone ship. 
) Also check to see if your software is up to date. Of course I know some have reasons why they can't or won't update. That's understandable. Oh forgot. Don't just clear the game cache, clear all of you're cache. For those that don't know rapidly hit your home button twice and all the programs that you've recently run will be shown. Swipe up on all of them to clear them out.