I would caution people that there are a number of instances of people complaining since they made the recent update to 10.2.3 that Logic is now opening and immediately crashing. As it turns out, this was my issue as well, not my hard drive (although this force me to follow up and buy a new spanky, more recording appropriate hard drive anyhow). Also not to fall out of the working flow, until Apple can help me figure this out, looking on how to do some writing of ideas into Garageband (to re-record into Logic later). And this, kids, is why we proceed with caution when updating to the latest greatest additions to our software ( I really did know this but this little update seemed harmless enough). I’d swear I looked into this, didn’t see anything and then like a day or 2 later looked again. Such is life.