I've got a Sony Ericcson Xperia Play that comes with an 8GB microSD card, which is definitely not enough for me as I like to put a lot of music on my phone (streaming is very poor on my network). So I bought a Sandisk 32GB MicroSDHC Class 4 Memory Card which is a MicroSD card like any other, right?

Ever since I put the card into my phone, my phone keeps shutting down and nearly all apps have a Force Close error. I've not installed any new apps since installing the new MicroSD and I've even uninstalled a bunch to see if it would help. Why does my new MicroSD break my phone?

If it helps, I'm running Android 2.3.3 stock.