I dont really know what happended. Got the jackpot on my first attempt, but missed Super Jackpot. Next time I tried for multiball, I was expecting the usual message (2 targets for multiball). I got that instead. I was able to reproduce within the game but everything went back to normal in the next game.
Memory has possibly got bad. Check your batteries too. I had something similar happen on my JP but changing batteries seems to have solved it. At least, it hasn't reoccurred as of yet.