I have not enough space on my disk for 2 engines (i had to uninstall 4.4 to install 4.5), so i’ll have to clean my disk before trying a migration test.
In the meantime, here are the 2 only log files i could find among the one listed in your link, just after a crash. I also found dump files but they are all older than the last crash.
it appears that it is not a crash but a “StaticShutdownAfterError” occuring right after a fatal error.link text