I have an issue with 15562 also, however mine was not crashing. I'm running Server 2008 x64. After updating i could start the program fine, but all the trackers were stuck on "updating..." state. Also DHT was stuck on the connection state. The download/upload speeds were all 0.0k/s and it would just sit there doing nothing. After downgrading back to 15520 everything worked fine again.