Been happening since 1.36 every few days
Couple of RPT entries at the time of the crash:
4:53:26 NetServer::finishDestroyPlayer(1859431212): DESTROY immediately after CREATE, both cancelled
4:56:47 NetServer::finishDestroyPlayer(1890287894): DESTROY immediately after CREATE, both cancelled
Core:
https://www.dropbox.com/s/xu7guabyee1k6i5/core.bz2?dl=0