Hey guys - encountered a bit of a problem today and was wondering if anyone has had any similar experiences. Basically, as the title says, iMessage has stopped working and started crashing. Every time I go in, it asks me to register my account (like the first time I used it) and after a couple of attempts to put my password in, the thing "quits unexpectedly". I've seen a couple of similar threads (both on here and other sites) but haven't uncovered a solution as such. I'm confused as to why this has started playing up today - I haven't performed any updates since moving to 10.8.2, and I'm using a 13" rMBP. Thoughts?